Has anyone out there seen copies of the old Reynolds 531 joke stickers?

This is something from the 70's bike boom days. It looks exactly like a pre-Tube Industries Reynolds seat tube decal (in English), only upon closer inspection it said "This bike guaranteed not built of Reynolds 531 tubing" or something very close to that - I'm working off of old memories. Suffice to say it's a standard Reynolds decal with the word "not" added in very non-predominently.

They weren't in wide circulation, and I was never able to get hold of any back then, but they were around.

Syke
Deranged Few M/C