i'll give you an example on import marks , i found a Remington Mosin Nagant locally in a mom and pop , no import marks , sporterized bubba stock but the remington cartouche was still visible on the butt , metal was mint , blue was perfect ,pristine bore , gave $190 for it
a little back ground , these were contract rifles for the russians , this particular rifle never was delivered , so it never left the country being a rare bird example in that not re entering the states it did NOT require IMPORT MARKS , this was about 12-14 years ago where you would trip over mosins in every gun shop in america , they were going for $150 -$175
that rifle with a bubba stock sold for almost 1k , literally like $3 bucks less than a grand while every other M91 was $150- $175 , thats no import marks to a collector