"...mint like above picture..." That one isn't 'mint'. Been refinished, at the very least. Most likely a commercial copy. No offense hunterhenderson.
99.99% of all carbines went through an arsenal rebuild after W.W. II. The chances of finding a real, issue, Carbine that didn't go through the rebuild are exceedingly slim. Most, if not all, in that condition, have been made that way by somebody with lots of time and money.
"...researching forums in the US..." U.S. values mean nothing here. However, as mentioned, more info is needed. Starting with the make.