I bought one of those in fall of 1970. I blew it up before the Five year 50,000 warranty period expired.
FM3 that's Pink right? Mine was pink too, Lemee see if I can still remember the Vin;
LM23H0Rxxxx321200; (was there an M29 in there?) Nope but, almost, that was 54 years ago. Some numbers never melt away. I still have 55 year old phone numbers in my head. But ya think I can remember even one out of six of my grandkids birthdays or even the birth-months? Nope. Well maybe one; the youngest is coming two around Christmas.