Help! Salvadoran Rolling block carbine value?

[matthiker]

I'm trying to help a friend move a small collection, one is a good condition 7mm SM Salvadoran Rolling Block carbine with Crest stamp. I have Mr Layman's book and from all indications it's rare and it also has the bayonet. I might sell my Argentinian and find the cash to buy it myself. It's in much better shape, although a bit younger.