BTW the 33x's series. I'm trying to establish introduction year of this airguns (330,333 & 335).
From Anschutz website:
http://jga.anschuetz-sport.com/index...=366&sprache=1
33x manuals are dated 1975.
Crosman was selling this airguns branded as 6300 i 6500 in 1986-1988/9 (333 and 335).
Any clues?