definitely a carcano. as for value, I wouldn't even put a value on it. the last time I was at cabelas there was an entire rack of them in the used gun section(well over 2 dozen rifles). many were running from 275-400 dollars depending on condition and caliber(I'd place yours at around 300-350ish). I have not been able to find en bloc clips for them anywhere(reducing them to single feed only) and the only ammo I've been able to find locally was nearly 2 dollars a round(for surplus ammo) there is only 1 or 2 companies out there still making 6.5 carcano ammo(not sure on the 7 carcano availability) and it's steep to say the least.
carcanos were never that big on this side of the pond so all of your resources are going too be limited.
all guns lost in a tragic smelting accident.
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