all found in http://www.hermann-historica-archiv.de/

double gun in Kal. 16/70
No.14967
new proofed in 1967 proably whenthe chambers were extended

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a 20/70 double gun with new barrels made by Henneberger 1968

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Collath-Büchsflinte with ZF Rüdiger scope,
Frankfurt a. O. um 1900, Nr. 14289
12 and 8 x 57 R, Krupp barrels, german proof Krone/"USG" and proofed again in 1930
"C. BARGHOLZ, HARBURG A/ELBE" proably the retailer

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Bockbüchsflinte in 16 and 7 x 72 R, Nr. 22429, Krupp steel barrels
Krone/"WUN" proof
OIGEE Luxor 4 x on claw mount

this 22429 is now the highest serial number I have seen if we forget the strange 9x57 double rifle

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double rifle in 9,3 x 74 R, serial number 21512

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Drilling in No 1 and 8x58R
serial number 14680
"WITTENER EXCELSIOR", Krone /"WUG" proof

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Drilling in No.4 and 9,3x80R
serial number 16740, Krone/"SWUG" proof

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Drilling in No.4 and 9,3x80R
serial number 18322, Krone/"SWUG proof