If you've red the Lane Tips on these items.....
.....you would know that someone had to work hard to screw up even this little bit. The stamps are not like the ones we see advertised on eBay but a hefty five pound or so item that is held in a treadle (foot) operated machine, so the stamp had to be inserted in the machine at 45* or 90* from the usual position to get proof marks that were wrong like these.
I guess these are proof positive that even craftsmen can have a bad day. Still interesting and just as correct as a "perfect" stamp.:beerchug: