There isn't any importation markings on the rifle. Does that have any significance...?
IIRC importation marks were not required prior to the 68 GCA. Many milsurp rifles and handguns that came over in the 50s and 60s lack them. Many of these guns have export
marks applied in their European country of origin, but that's obviously not the same thing.
FWIW the lack of import marks is mainly a Big Deal on two generalized groups of milsurp firearms:
- Guns that originated in the former Soviet Union and its satellite states, because we weren't on speaking terms with those countries until well after the 68 GCA went into effect.
- Milsurps that weren't imported in significant numbers until recently, e.g. Swiss K31s.