Has any one ever came across a 1948 frame with the letters HDA stamped in the frame ???
HDA have been stamped on the where the brake plate bolts on the front motor mount, same on other end of the motor mount, on the clutch pedal end.
Also stamped in the frame, in between the seat post cross member where it is welded it to the out side of the right side of the frame, are the letters HDA. They are between the welds and are about 1/4 " inch tall.
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