here number 1354, typical Mas serial number but 7x54 so made by Fournier the receicer dont have the peep sight rail on top like the 10,75x68 mm rifle have but the rear sight is completly unique. http://www.naturabuy.fr/mas-36-fournier-item-1259752.html
so we have now a lot of rifles without the little "JF" serial number above on the left side I thought before being typical for the Fournier rifles in 7x54. witht he big number on the left side under the caliber this rifles looking like every other rifle made at MAS.
looks like different parts were mixed for the last two rifle's here
what to think about this now? -the Mas 36 sporting rifle was made by MAS between 1946/47 and 1951 -Mas made this rifle in 7x57, 8x60S and 10,75x68 -the rifles were not build continuous because higher serial numbers have barrels made in 1947 -after the end in the Manufacture d'armes de Saint-Étienne it seems Fournier and probably Sterna bought the remaining parts on stock and made rifles - only Fournier rifles are made in 7x54 and its possible he rechamber existing 7x57 barrels - Sterna rechamber 7x57 barrels in .284 Winchester - it seems Fournier get a wild mix of parts, some receiver numbered, some not - the last two rifles here showing that the different parts were used to made unusual combinations