https://www.ebay.com/itm/1970-Yamaha-R5-Vintage-Enduro-Garage-kept-all-Original-Two-stroke-/233493346551?_trksid=p2385738.m4383.l4275.c10
"Vintage Enduro" :umm:
Of course it's not likely a 70, but where's the chain?
for sure a 71, but may have a mfg date of 1970. i had one like that, was titled as a 70 but was def a 71 model year.