Reply by blackcherry

Once you start to clean the body of the plane on the left side of the body the stamp size and miller fall trade mark will be revealed. I believe it is equivalent to the stanley no. 6 . I just pick up a no. 6 and 8 miller fall a few week back which now brings my total to 5 of Miller Fall planes. I really like using them the blades hold a long sharp edge, and are great workhorse in my shop. Hope you get it tune soon enjoy…Blkcherry