Originally Posted By: ellenbr
I stumbled across this Sauer/Krupp 3 Ring Steel certificate on Gunbroker, http://www.gunbroker.com/Auction/ViewItem.aspx?Item=243575253 , and it goes a long way to define that Sauer used a data string(123.28 - #123 or 1928) on the lower rib(and I think I've seen it on the individual tubes) for their Krupp Aktiengesellschaft tubesets:

Interesting Belgian proof certificate also.

This gun is very interesting. It not only documents that Sauer was supplying barrels in the white. It also shows that there was a relationship with François Dumoulin & Cie Societe Anonyme. FDC was the trademark for Dumoulin.

Which leads to another question. Dumoulin was heavily tied to Fabrique to National. So was Dumoulin acquiring barrels directly from Sauer? Or was FN the middleman? This was would not be the 1st time that FN was supplying German barrels to the Belgian trade. About 1900, FN was using Siemens-Martin for their barrels.

Pete

http://www.damascus-barrels.com/Movie.html