EXTRA FINE & EARLY UNMARKED STANLEY NO. 90 BRASS & IVORY RULE - 1FT 4 FOLD

This rule has stayed remarkably clean with crisp corners and brass trim.  Clear pentagonal pin in the main joint. As per Walter's Stanley guide, this was offered with the option for brass only prior to 1860 making this very likely an unmarked type 1 or 2. Top shelf.