I also find foreign proof marks interesting. Years ago the RCA offered Colorado Centennials that had originally been exported to France. Being imported, France had to put it's OK on them. Something about a group of new ones found in a warehouse in France. RCA had them returned to the U. S. and sold them at a discount to it's members. Just a little out of normal but surely not as different as B/D/S/U or ATF guns, In the 70s S/R did not make many special runs of guns for organizations or sellers, so these little Super Single Sixes were unusual at that time. These Colorado Centennials were about 10 years old when sold by RCA.
I would sure like to add a 3 screw with foreign proof marks to our accumulation, as 95% are old models. Specials like the four single action anniversaries, SRM, Made in the 200th Year of American Freedom, and a .17 cal Single Six are allowed in the safes because they are exclusively New Models.
SATCOM