Correct, forgot that one.
Agree on the date stamp thing. Never seen a definitive view on exactly when it started. Or serial numbers. Johnbaz's rifle is interesting in having early features (rear sight, especially), but, while pre-date stamp, it bears a serial number. Which makes me guess early 60s, but that is definitely a guess, given the lack (that I have seen) of detailed facts.
Equally, I've not seen authoritative information on the Germany vs West Germany stamps. I am aware that some of the 50s UK market guns were instead stamped "FOREIGN".