In my opinion the Type56's (not the 59/66) should have been granted special curio status exempting them from the 50 year regulation.
But what's the BATF postition on the matter?
For example:
The 7mil/7thyear guns (erroneously attributed to 1963) didn't start selling in the US until 1stQ 2014. But is that because the importers were being cautious, or did the BATF restrict sale before Jan 1, 2014?