Charlie, The P Mullin(New York City) is a 10 ga Jones Underlever made on a Birmingham
Proofed Barrelled Action. 32 In 10lb 4 Oz Laminated Steel 4 pin lock with Gold Sheild.
It has a Connon Breech-6 in , 4 in Chamber. I have a 4 in Brass shell but have not found
a 4 in 10 ga shell. Have Mullin 8 Ga with 4 1/4 in chamber. Mullin made unadorned shotguns. 1850's to 90's. Have pictures but do not know how to post on this site.
Can send on e-mail if one is
sent-mcphailcherkoee@aol.com
Reguards
Bill