double gun in No. 3 , SN 6539 without german proof

with another barrels in No. 3 and 10,3mm rifle caliber
notice the steel barrel against the other damascus shotgun barrels. believe this barrels were made in the first years after the double gun was sold but in any case before the turn of 1900 to maybe 1902 when a custumer had order a nitro proofed shotgun barrel in any case.

sold at Kessler auction house/Switzerland last november http://www.kesslerauktionen.ch/Kataloge/Katalog/katalog41.pdf
informations coming fom Mister Kessler, thanks very much