Thank you, Skeettx, for your kind welcome and links. The stock photo of the Murcott pinfire with the R. Adams action (Patent no. 285 of 1860) is the only other Murcott pinfire game gun I've been able to find mention of. Mine is but the generic unmarked double-bite Jones-type underlever, though it was originally of good quality.
Available serial number information is sparse. Nigel Brown gives a c.1867 date for no. 490, and gives no. 1877 the wide range of 1875-1887! I may have to live with a range of 1866-1870 or so.
This was indeed my first post, but it won't be my last. I have been researching the British pinfire game gun for more than 20 years, and I'm working towards a book on the subject. I am new to becoming involved in message boards, however. Now I just need to figure out how to add photos to posts.
