Slate the 1K427 is the weight of the barrels. The rest is interesting, I think it was originally proved in Belgium in the early 1900s and later reproved in Germany. there appears to be a St Eitenne nitro proof with EC powder that is over stamped. The eagles is probably a German proof mark. really beautiful barrels and the whole guns says class.

Jim A

I learn something every day, and a lot of times it's that what I learned the day before was wrong