I am also trying to ascertain if my L4A 42-38455 had any markings other than the serial number on the tail. It spent all of its life in Hawaii so may not have had any unit markings or individual lettering. It has been continually airworthy since my test flight (after rebuild ) on March 3rd 1994 and despite lots of research I have not been able to “personalise ” it. I have all the history from the Movements card and the FAA records but so far it is a “blank canvas”