Larcher asking the seller of the last rifle here for the year under the barrel and it is "Mas 1951"

with No.682 made in 1947 and No. 1866 made in 1950 the No.295 made in 1951 dont realy help to come closer to the question when No. 1 was made.
obviously they use an old action in stock or rebarrel sometimes this riffle so it dont help me anything.