MiroCraft… I have a 12 ft Mirocraft that has the lap stampings like yours. As for ID tags, my boat has flimsy plastic "MiroCraft" plates riveted to each side below the gunnel about 10 inches forward of the transom. Check for signs of three rivet holes in a line spanning about 9 – 10 inches in that location. If the plates are missing the holes or rivets should still be there.

Joe B