I can't enlarge thumbnail pics ON THIS BOARD and the mods haven't helped. But I THINK your gun has fixed sights? Those are uncommon in the USA and are the way the gun was used by Mossad agents. I've seen an instruction sheet on these, in Hebrew, on the Beretta board. I'm not Jewish and can't read it, but recognized it and the post ID'd it.
I believe that Israeli airline security men also used these .22 Berettas.
If you have the flat grips and fixed sights, you are very lucky. Not easily found here. Most imported .22 M-70's have the adj. rear sight and prob. most also have the big post-GCA '68 grips.
This is not only collectible, but a fine small game and plinking gun.
Among small .22's, I think it's probably the most reliable.
Good luck on finding magazines.
Get over to the Beretta board and see the value and any other important info. You don't seem as excited about this gun as I think you should be.