Thanks again Raimey and Tim.
We can't know if the action originally carried the Smokeless Powder proof mark, or if it was added at the time of the re-barrel. It appears to be less worn with raised edges than the '20' and 'LD'. And the 's' and 'x' controller's stamps are different fonts. As Bob stated the barrels originally could have been damascus.
Not hard to imagine that Francotte contracted with MAGI to rebarrel in the 60s; but the gun was still a Francotte. This would also assume that VL&D (or the owner) sent the gun back to Francotte for the rebarrel.
