another piece for the puzzle

a 7x57 rechambered into a 284 Winchester by Aldo Sterna/Annecy serial number 702
http://www.naturabuy.fr/MAS-36-STERNA-Annecy-cal-284W-item-2232019.html

what I have found is that the 7x57 mauser was legal for some years in france but then outlawed again. for use in the colony's there were never any restrictions anyway. I have the impression the production of this sporting rifle was terminated by MAS probably in 1951/1952. maybe this was done because of new demand by the war in south east asia and the upcoming riots in north africa.

it seems that remaining rifles and parts were sold to Jean Fournier and Aldo Sterna. Fournier bypassed the 7x57 problem with his 7x54 wildcat and Sterna rechambered allways existing barrels into the 284 winchester. every Sterna made rifle till now have "7x57" on the receiver.
there may also some rifle allready be sold when the 7x57 was outlawed again and going back to sterna and fournier for geting a new chamber.