- Jun 1, 2005
After reading the post from Snagger about bike ID I have a like question. My engine # is 318101, upper ID plate # is 9 73 which I assume is manufactured Sep 73, the lower # is SR 61109. I bought the bike for a 73 Norton Commando 850. I had contacted NOC, he said this was a bit puzzling but that the engine was a 74 manufacture, any help would be appreciated.