Have a look at this thread.
Hiya doin Tony,I'm looking for an O3 if anybody who has one is reading this...haven't been looking that hard but I don't think I've ever seen a O code razor.
Now, now Marty don't you be getting jealous now, just because you can't get a date code razor prior to 1951.Hiya doin Tony,
Is that O3 razor for your son? What a sweet man you are! Pretty sure the O date isn't all that uncommon.....lemme see what's in my arsenal.