I found this wonderous little old multitool in an antique shop in Dunkirk, France.
Only marked "London", "Meter" and "23", but no on knife tang stamp.
Video link:
Pictures below.
So I did what anyone would do, stand in front of my attic mirror, do a creepy chant and summon Jsews from the beyond.
And so he appeared, with his wealth of knowledge he was able to conjure up a similar piece and determine it was likely a German Henckels Friodur.
I say "likely" because a good mystery is never truly solved.
Anyway, you be the detective now, I thought I found the Jimmy Hoffa of multitools, but it's just another cool rare piece, luckily not buried in concrete.
Thanks Bob