How to date a 55? I would need to see a picture of the skate with the logo also behind the slitter and rear stop. Type 1a 55 spans 1897 thru 1900 type 1 with the B stamp on the right side behind the slitter ran from 1900 thru 1909. Following that is the Stanley Script logo an early model and a later model early model has no screw holder towards the rear of the slitter 1909 thru 1920 after 1920 was the Stanley works the Sweetheart logo with SW in a heart comemerating William Hart president of Stanley Works.