Just unpacked this old London marked 12g hammer double with side lever. Looks very old, maybe around 1870, rather unadorned but solidly built, and quite heavy; pistol grip with silver oval, 30'' barrels. I removed the cross key and found old Birmingham proofs and number 13 on each tube (bore size i think). Would appreciate any information on T. E. Yeld.

Kind regards,
Jani