H-, I know of ten rivet, six rivet and four rivet examples. Haven't got examples of the mark for the 10's 0r 6's. Deschler EKI's show a footed "1" as far as I have found. Will keep looking.
Can you locate the link? This thread shows one on page 1 but It needs to be discussed as not conforming. "1" wise and rivet configuration wise.
--dj--Joe
