I am curious if the bore diameter was actually measured?
Teschner - Collath sporting arms are quite novel with their eccentric breech. Georg Teschner(Johann Gottlieb Teschner) founded the concern in 1838(the same year Wilhelm Collath(Carl Wilhelm Theodor Collath) was born) and brought it thru the pinfire age I believe. Wilhelm Collath found gainful employment @ Teschner in 1859. And the story continues from there. There was a satellite stamping station or satellite proof facility @ the Teschner - Collath concern(later W. Collath & Sohne) & they had their own bore gauges:
0 = 10 gauge
1 = 12 gauge
3 = 14 gauge
4 = 16 gauge
5 = 18 gauge
6 = 20 gauge
7 = 24 gauge
8 = 28 gauge
I have seen a similar one stamped No 5660 Cal. 3 11/15?
Serbus,
Raimey
rse
