A friend has an original wooden case of LC carbine ammo dated '43 and '44 in their original unopened card board boxes. I assume this has some collector value but I have no clue what that might be. Any opinions?
Very little if any collector value as there is still so much of it around. Value is around the same as new ammo unless you find someone who wants the ammo in a spam can. Being in boxes means it would be in 800 round cans. If they want a can then what ever they are will to pay for it. I have seen people selling it for $600+ and it not going anywhere. About $400 a can then they start to get a few bits.
Some ammo types are in demand. Grenade lunching cartridges in unopened boxes are always good sellers as are very early date rounds like 1941 Winchester made. If you find head stamps such are .32 Winchester or .30 Winchester then you have the first runs of trial based ammo. $$$$$$$$$ All the way to the bank.
At $350 a 600 round spam can that breaks down to over $29.00 per 50 rounds. You can buy brand new ammo for $15 a 50 round box and put it in an ammo can and close it sealed air tight. You have pretty well protected the ammo then. Keep it cool and dry and it will last as long as a spam can.