I can recognize most of them -serial number- bore size 18 and 17.4- and the proof tests - but I was hoping someone might be able to fill in a couple blanks
its a Pieper 12 bore - choke constriction is .002 in the right and .029 in the left
the inspector's marks (red arrow ) if I understand them - the letter with the crown was used until 1877 and the letter with the star started in 1877 - so with both - I am guessing this can be dated to 1877. (and there is no "NON POUR BALLE" as in "not for ball" in the tight left tube - and that started in 1878)
what does the .5 on each tube (green arrows) represent?
and what is the "B" and number with a star in purple circle
or the 7 in yellow
