Schraff opened his business in 1924. As the gun trade began to decline in Liege (a largely French speaking area), more shops were opened in Brussels. These makers often had German or Flemish roots. Marc may have more about this...
The gun was proofed in 1930. It was nitro proofed. At the time of proof the barrels weighed 1.216 Kgs (2.68 lbs).
It was chambered for 20ga 70mm shells.
I am not familiar with the crossed canons trade mark. I can only assume it was Schraff's mark. I have seen other guns by him with Cockerill barrels. I saw one of his guns sold in Europe for $1,300 or so. It had less engraving.
Pete
