They certainly look like Beretta 1934 or 1935 magazines. Model 1934 is in .380 aka 9mm Corto, whereas the Model 1935 is the 32 auto aka 7.65mm version. As to the magazines, they may not have any visible markings on them - they could be as much as 80 years old and have lots of wear and tear on the back (I can't tell from the pics). The mags are usually marked on the back, however many have no markings whatsoever. My Model 1934 is dated 1940 (XVIII is also stamped on the slide - that is the year in the Fascist calendar). It is in fine shape, but there are no markings on the magazine - the back shows sign of wear.
If you have any .380 ammunition, see if they fit in the magazine - 380 will obviously fit in a 380 mag, but shouldn't in a 32 mag. If you don't have 380 ammo, you could try standard 9mm. 9mm has a slightly larger diameter case (than 380), and regardless is obviously too long to fit in the magazine properly, bit it might give you a clue as to which calibre the magazines are. A 9mm cartridge will *almost* fit in my 1934 mag.
At any rate, considering the 1934 pistols (with mag) often go for as little as $150, the magazines can be surprisingly valuable. One went in a Canadian auction last year for $35 + fees. A US gun parts website sells them for $42 USD.
If you determine whether they are 1934(380) or 1935(32) magazines, you should be able to sell them on the EE for a reasonable price. Over 1 million 1934's were made and 500,000 1935's, and lots of them made it over to Canada. Many owners would like to have an extra mag (I would).