My belief or guess is that the barrels were purchased from Falla for the Francotte action and were marked on the top of the barrels as Francotte and no one bothered to stamp the flats. Either Falla assumed francotte would mark them or Francotte assumed Falla would mark them. Obviously neither did. Again, this is just a guess. Bob, thanks for taking the time to follow through on all of this. I really appreciate your help and the help of everyone else. Hopefully I can help you in the future. The picture you posted is remarkable in the similarity right down to the cocking indicator.

Gerry Addison