Originally Posted by
SteveH
those spots look like the location that they typically put pads (Leather or rubber) to help isolate the vibrations from the machine. Early Howe machines even have the rear hinges in a padded cup...
Those spots are non-ferrous metal and the left one has a hole in the center that goes down about 3/8" - Maybe some type of ferrule? or maybe kind of like a thumb tack with leather on top??
I'm thinking maybe leather since the holder pictured above had leather under it. I couldn't see any wear spots on the base of the machine, but the right one looks like the metal was
worn down.
Janey - Neat people never make the exciting discoveries I do.