I knew I was taking a risk BUT I had a number of long telephone conversations with the seller and he sent me lots of photo's. Everything he told me and sent me was accurate. He had last ridden the bike in 1983. After that, during the 1980's and 90's the seller had paid "specialist firms" in the UK to do the restoration work on all of the bikes cycle parts, mechanicals and electrics.Lino is in Portugal so UK registration is not important to him. If you hear of another at that sort of price it may work out worthwhile to ship it. The potential problem with buying long distance is that he may get a poorly described bike like the overpriced, cosmetically good, mechanically bad, bike that Martyn describes.
When I received the bike I pulled the head off and could see that all of the top end was brand new as was the piston so I just put it back together and rode the bike. MISTAKE - it was all new but the workmanship was so shoddy that a complete top end rebuild was required after less than 500 miles. Likewise at around 3,000 miles the big end failed, due to a crap rebuild in the past - in there I found what should have been an almost brand new ALPA crank pin that seemed to be missing almost 30% of its rollers.
I figure the guy who sold me the bike had been an innocent victim of shonky repairers.
I now beleive with ANY old bike one buys that irrespective of appearances, irrespective of history, documented or not, a complete mechanical strip and rebuild is essential BEFORE you try riding it. And for a Vincent this may mean you need to budget around US$20,000 if you cannot do the work yourself. If however you are a dab hand with the tools and only need to pay for specialist work - like pin boring of the conrod; reassembly, alignment and balance of the crank and such like you can easily cut that cost in half.
Martyn