I'm far from an expert, but I BELIEVE I remember some of my SO stuff having the date code upside down compared to the other lettering.Would it be upside down to the other lettering?
That looks like it though.
Back when they used Viking steel?1760!!
Well, considering penetrating oil or acy/oxy torches hadn't been invented back then I guess they had to resort to pretty good steel to deal with those old stubborn fasteners.Back when they used Viking steel?