Below is the List of Openers I have that start from  M - P

Below is openers that I have in cast iron some have pictures linked

Example : M & B  is written on one side & Extra Stout is written on the other

Type C 84mm   M & B / Extra Stout
Type C  86mm  M & B  /  Export
Type A 101mm   M & B Ltd / same
Type A 102mm   M & B Ltd / same
Type  J 80mm   M & B Ltd / same   (stopper)
Type  J 80mm   M & B Ltd / same   (stopper) (type A style writing)
Type C  88mm  M & R / Mild
Type G 91mm   M.B. & T. Auckland / same
Type E 75mm   M.C.D. Milk / same
Type B 90mm   M.L.B. Lyon / same
Type D2 93mm   M.M. & Co / . Bolton.
Type F 77mm   M.M. & Co / Bolton
Type D2 79mm   M.M. & Co /. Bolton.
Type C 78mm   Mac’s Beer / same
Type C  99mm  Mac Ewans  /  Pumps
Type E 91mm   > Mackays > / Table Waters
Type G 91mm   Mackeson / Stout
Type G 91mm   Mackeson! / same
Type G 91mm   Mackeson’s / Whitbread
Type C 84mm   Mackie & / Gladstone
Type C2 87mm   Mackie & Gladstone   (Stouts & Ales on head)
Type E 98mm   Mackie & Gladstone / Barclays Lager
Type D 86mm   Mackintosh  /  Plumstead
Type C  89mm  Maclachlans /  Castle Ales
Type E 90mm   Made From  /  Renishaw Iron
Type A 99mm   Made in Japan / Blank   (this is shaped like a tennis racquet)
TypeA 96mm   Made in Japan / Blank   (this is shaped like a tennis racquet)
Type B  84mm  Mainzer  /  Aktien - Bier
Type A 92mm   Malco / same
Type E 75mm   Malton  /  Russells
Type E 90mm   Manchester / City Dairies
Type E 90mm   Mandora  /  Sunecta
Type C 85mm   Manns / Watneys
Type C 85mm   Manns / Manns
Type F 77mm   Mansfield  /  - Ales -
Type G 91mm   Mansfield Ales / SAME
Type B 81mm   Marceau  /  Source
Type E 91mm   Marchants / - Sydney -
Type E 91mm   Marchants / Melbourne
Type C 75mm   Marchants / Please
Type F 91mm   “ Marchants “ Ltd / Blank
Type G  91mm Marchiennes  /  > Allies <
Type C 96mm   Marrickville / Malleable Castings Ltd      (from Sydney)
Type E 90mm  Marston's Ltd  /  > Burton <
Type A 91mm   Martin  /  Nelson
Type C  76mm  Martin  /  Nelson
Type E 99mm   Martins Goldleaf / Goldleaf Cigarettes
Type B 82mm   Mass Brew Co  /  Boston   (#12 on tongue)  (from USA)
Type B 82mm  Mass Brew Co  /  Boston   (NO #12 on tongue)  (from USA)
Type C 85mm   Masons / Super Jaff
Type F 92mm   Matthew Browns  / . Nuttall’s .
Type F 90mm   Matthew Brown's  / . Nuttall’s .
Type E 90mm   Matthew Brown's  /  - Nuttall's -
Type D 91mm  Matthew Brown’s  /  . Nuttall’s .
Type B 91mm   Mauri Brs & Thomson Ld / Auckland
Type B 89mm   Mauri Brs & Thomson Ltd / Auckland
Type B 93mm   Mauri Brs & Thomson Ltd  /  Auckland  (different sized writing to above)
Type G 98mm   x Marvel x  /  same
Type C2 82mm   “ M.B. Fosters “ / “ Bugle Brand “
Type C2 86mm   Mc Ewans / Extra Stout
TypeC2 86mm   Mc Ewans / Pale Ale
Type E 90mm   .Mc Ewans.  /  8 Pale Ale 8
Type C 85mm   McEwans / Export Ale
Type G 91mm   - Mc Ewans - / Ales & Stouts
Type E 76mm   Mc Ewans  /  Strong Ale
Type E 76mm   Mc Ewans  /  Export Ale
Type E 90mm   - Mc Ewans - / Strong Ale
Type E  90mm  - Mc Ewans -  /  Export Ale
Type E 90mm   McMahons / same
Type F 91mm   Meadowland / same
Type C/g 77mm   Mecca Ltd  /  same
Type C2 90mm   Melb’e Bitter / Blank
Type C 78mm   Melbourne / . Bitter .
Type E 90mm   Melbourne Ale  /  same
Type C 98mm  Melbourne Ales  /  same
Type F 102mm   Melbourne Ales  /  same
Type C 75mm  Mellow Brew  /  blank
Type C 86mm   Mercers / Meat Stout
Type E 99mm   - Mercers - / Meat Stout
Type C 95mm  Meux  /  same   (LH / RH)
Type C 85mm  Mew Langton  /  Ales  Minerals
Type E 98mm   Middlesbrough  /  Winterschladen
Type D 86mm  Midland Brewery  /  Palmerston Nth
Type E 98mm   Midland Counties  /  > Dairy Ltd <
Type G 91mm   Mission  /  Home Deliveries    (Rd # on Mission side)
Type G 91mm   Mission  /  Home Deliveries   (Rd # on  Home Deliveries side)
Type A 92mm   Mitchells & /  Butlers Ltd
Type D2 86mm   Mitchells & / Butlers
Type E 107mm   Mitchells & Butlers /  * Export Ale *
Type C 109mm   Mitchells & Butlers /  > Extra Stout  <
Type E 107mm   Mitchells & Butlers  /  >  Extra Stout <
Type E 107mm   Mitchells & Butlers / “ Nourishing Stout “
Type C 109mm   Mitchells & Butlers / “ Nourishing Stout “
Type E 107mm   Mitchells & Butlers / > Allbright Ale <
Type C 109mm   Mitchells & Butlers / > Allbright Ale <
Type E 107mm   Mitchells & Butlers / > Family Ale <
Type C 106mm   Mitchells & Butlers / Export Ale
Type C 86mm   Mitchells & Butlers / Export Ale
Type C2 87mm Mitsuya Hirano  /  (Asian writing)
Type E 90mm   Moeremans  /  02 - 21. 19. 75.
Type E 89mm   Moffett & Co  /  Blank
Type A  156mm Moline Promal  /  St. Charles, ILL   (2nd picture)
Type C 88mm   Monopole / Spa
Type C 88mm   Monopole / Spa   (different panel shape to above)
Type C/g 87mm  Monteith’s  /  West Coast NZ.
Type E 90mm   > Moore’s < / Softdrinks
Type G 91mm   - Moores' -  Table Waters  (has Rd.811274 on one side & Pt. Appld. For on other side)
Type E  75mm  Moorhouse  / same
Type E  90mm  Moorehouse  /  L'Pool & Bir'Head
Type E 99mm   Moorhouse Bros  /  same
Type G  91mm Morecambe  /  Direct Supply
Type E 90mm   Morland & Co. LTD.  / Abingdon
Type A 92mm   MoPar  /  same   (bronze)
Type A 92mm   MoPar  /  same   (nickel  over cast iron)
Type E 99mm   Morgans Norwich / same
Type E 91mm   > Morgans <  /  same
Type E Morland & Co. LTD.  /  Abingdon
Type G 91mm   Most Men / Like Marstons

All of the 4 Moxie openers below are different including head and shaft size

Type J  81mm  Moxie  /  same  (bottle stopper) (from the USA)
Type J 70mm  Moxie  /  same  (bottle stopper) (from the USA)
Type J 77mm  Moxie /  same   (bottle opener) (from the USA)
Type J 71mm  Moxie /  same   (bottle opener) (from the USA)
Type J 71mm  Moxie /  same   (bottle opener) (from the USA) (as above but different shaped head)
Type D2 90mm   Mullens & Co / Newcastle
Type G 91mm   Murray's Stout  /  Murray's Beer
Type C 86mm   My Cellar  /  same
Type G 91mm   Myer Emporium /  Melbourne   (Rd # on Myer side)
Type G 91mm   Myer Emporium / Gadget Bar
Type G 91mm   Myer Emporium / Melbourne   (Rd # on Melbourne side)
Type A 87mm   Myrtle St / Asher

Type E  90mm    N. Furnivals & Co.  /  - Fleckney -
Type C 81mm    > N.B.C. < / same
Type E  90mm   > N.B.C. <  /  same
Type B 89mm   N.Z. Breweries LTD /  same
Type A 93mm   N.Z. Breweries LTD  /  Blank
Type A 84mm   NZ Breweries LTD.  /  Auckland
Type C 91mm   N.Z. Breweries Ltd  / ( has recessed panel but no writing)
Type D 85mm   NZ Breweries LD  /  Lion Ale
Type B 88mm   N.Z. Breweries Ltd / For Finest Ale & Stout
Type E 90mm   N.Z. Breweries. LTD  /  Oat Malt Stout
Type E 90mm  National  /  Sinalco
Type E  90mm  Navy's  /  Meudon
Type G 91mm  Navy's  /  Meudon
Tpye C/g 87mm   Newcastle  /  Brown Ale   (like type G)
Type C/g  85mm  Newby & Son  /  West Bromwich
Type C/g 86mm   Newcastle / Amber Ale   (crown shaped head)
Type C/g 86mm   Newcastle / Blue Star Ales   (crown  shaped head)
Type F   92mm   Newcastle / Blue Star Ales
Type C  120mm New Haven Dairy  /  Safe Milk
Type B  80mm   Newman  /  Pittsburg
Type B  80mm   Newman  /  Pittsburg  (different style writing)
Type E   98mm   New South Wales  /  Aerated Water Co.
Type E  99mm    Nile Breweries Ltd  /  King of Beer-Nile

Type B   93mm   O.B. Ales / O.B. Ales
Type C  117mm  O B Beer  /  (asian writing)
Type A    92mm   “ O. D. Murphy “ / same
Type E    89mm   “ O. D. Murphy “ / same
Type E    90mm   - Op - Ale -  /  De Smedt - Opwijk
Type G    91mm   - Op - Ale -  /  De Smedt - Opwijk
Type C2 94mm   "Offilers' Brewery"  /  Derby.
Type C2 91mm  Ohlsson’s Beers / same
Type E  90mm   Okell's Ales  /  same
Type D 89mm    Old King  /  same   (from USA)
Type B 83mm   Old Imperial  /  blank
Type H 98mm    > opener <  /  same   (from USA)
Type C 92mm   Opens – All  /  blank (has flat tail, no hole in tail, chunky tongue)

Type A 91mm   P. Marsland & Sons / Huddersfield
Type E 89mm   Palatine  / Dairies
Type E 89mm   Palatine Co Ltd  / same
Type F 77mm   Palmer / Cutler
TypeC 129mm  Palmyra  /  Meehanite (R)
Type D2  87mm  Panther Pils  /  same
Type A 92mm   Parker’s  /  Morecambe
Type B 83mm   PAT 94  /  blank  (from the USA)
Type R 81mm   PAT 27609 / 30  EC / blank          (resealer)
Type R 80mm   PAT.App. 27609 / 30 /  blank       (resealer)
Type R 85mm   PAT. APP. 27609 / 30 / Blank     (resealer)
Type C2 91mm   Pegrams / Blank
Type C 94mm    Pennine / Chainbelt   (Cheers on tongue & head Shape like slingshot)
Type D 84mm   * Pepsi *  /  same   (from India)
Type D   76mm   Pepsi – Cola  /  same
Type E   90mm   Pepsi – Cola  /  Yeo Hiap Seng
Type E   98mm   Pepsi – Cola /  same
Type D2 76mm   Perfection /  same
Type G  91mm Perfect - Pils  /  - Furst -
Type A 89mm   Perkins /  same
Type A 93mm   Perrier Water  /  Source Perrier   (has round looped head)
Type F 90mm   Perrier Water  /  Source Perrier
Type B 91mm   Perrier Water  /  Source Perrier   ( 3mm writing)
Type B 92mm   Perrier Water  /  Source Perrier   ( 5mm writing)
Type A  85mm  Perrier  /  same  (bottle shaped handle)
Type C  118mm  Peru Foundry Company  /  blank
Type C2 93mm   Peter Walker & Sons  /  Lager
Type E  76mm   Phillips  /  same
Type E  91mm   > Phipps Ales < /  same
Type C 91mm   > Phipps Ales < /  same
Type E 99mm   Phoenix A.W.CO. Ltd  /   blank   (from N.Z.)
Type E 98mm   Phoenix Waters / x Singapore x
Type G 91mm   Piper Export  /  Jubilee Stout
Type A 77mm   Pinnicle / same
Type E  99mm  Pitt & Norrish  /  same
Type B 92mm   Point Beer  /  same  (point is written in script)  (from the USA)
Type B 92mm  Pointer Beer /  blank  (pointer is written in script) (from the USA)
Type E 91mm   Pollard’s / same
Type D 78mm   Pop  /  Pop
Type D2 80mm Postillon  /  same
Type C 87mm   Powley & Co Ltd.  /  Same
Type E 91mm   Powley & Co Ltd  /  Same
Type E 91mm   > Praeds < / SAME
Type E 91mm   > Praeds< / same   (different shape head to above)
Type C 96mm   Probyn’s  /  Argus Brand
Type E 89mm   Premier Mineral  /  Water Co. Ltd
Type D 80mm   = Prince = / Phenyle