1911 Fox BE #177XX has "KRUPP FLUID STEEL MADE BY" top right breech area in italic serif font. Underside both barrels fwd. of flats: "-FLUID-STEEL-KRUPP-ESSEN- 4" italic sans serif font with exception of barrel wgt no. "4" which is awfully deep to have survived finish striking from a marked raw tube. Right side barrel flats at least 3 strikes of the Fox Proof oval and left side "B 177XX" struck over the Fox Proof oval. No evidence of obscure initials Belgium-side. Files marks on forend lug and scraper marks underrib and adjacent on barrels sure speak All-American to me. The top barrel stamp matches Daryl's. I have no idea what's "supposed" to be found on the underside. Lots of folks know how to use stamps.

jack