VERY RARE TYPE 1 DISSTON & MORSS SLIDING BEVEL SQUARE - 13 1/4" - 1867-1870

Blade measures 13 1/4" at its longest. Stamp reads 'MADE BY DISSTON & MORSS PHILADA WARRANTED TRUE'. This is a type 1 variation 1 according to Eric Bensen's excellent research at chapticowood.com and is extremely uncommon as he notes he has only ever seen one example (not this one).