The US gave denmark a ####load of M1's after WWII, they needed more and bought a ####load of itallian M1's too. Itallian M1's were built on winchester tooling so all parts are compatable. Danes also made some of thier own parts.....sights, barrel's, few other small parts (marked VAR). They made some brutal looking beech stocks, while fully functional, look like ####. They will usually have a small zeroing sticker in the barrel channel of the stock.
Dane M1's will be either winchester/sa/breda/beretta, just have to look for beech wood, stock sticker, s/n restamped under butt, var parts, and i'm probably forgeting something.....
I bought my breda for $350 and beretta for $375.