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Interesting. The 33 looks like it has two shoulders, so that means they used different wheels on the blank one or a different grinding process, but achieved the same result.

looks like the 33 is more hollow ground compared to the unnumbered one?

:aargh::boohoo::beer2:

I feel so stupid. That's TWO big swedes I've missed now. Third time's a charm?
Muchas Congracias Clas!
:beer