I doubt the New Haven guns will ever be collectible. Just because there not made anymore won't drive a "collectible" market. The Japanese Mfg Browning A5's aren't made anymore either and I know of no collectible market for them.

The pre64 M70 is a icon for rifles just as the M12 is for pumps(the Rem 870 while a good gun isn't collectible)and the Belgium Browning A5 is for autoloaders.