Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Hi Peter, if you're missing the vin plate I have a couple of 550's and can see hoe close our VIN'd are to give you a rough date.Here's your bike's UK twin...(also a US import)
Well mine is mfg 4/76 - same as my birthday...and I suspect it has the wrong front fender (should be two stays). My other 550's are two-stay...
:-) knew you'd spotted it ha ha....it'll get a second stay at some point...