amazing. i just got my newly purchased 8100 mile 74 r90s back on the road today. been stored in a basment for six years, two previous owners. serial #4950982, don't know where that puts it in production or u.s. distribution. i have owned it for two weeks. new tires/tubes, carb clean, master cylinder rebuild, steering stem bearings, fluids changed, wheel bearings repacked, rear brake light switch, clutch cable, air filter, odyssey battery and a few things i can't think of right now. my mechanical ability is nil (as my signature states) so i had a trusted mechanic at a small independent bmw shop do it. original paint, seat, etc. nice enough not to re-furb. got the original owners manual, tire pump and one correct mirror. plus a box of parts that included air filters, oil filters and other service related parts. no service records, but i think the spares are a good indicator. like you my initial thought was sell it to buy a more modern mount. but how many chances do you get to own/ride an original r90s? in forty years prior i've had none. heres a couple of pics after its first quick wash today since being stored. fwiw, i have never seen a r90s or for that matter, a bmw airhead with the engine painted black from the factory. i've owned beau coup /5's, /6's, and /7's along with three gs' and a gspd.