[CR] Record Crankarms w Outboard Pedal Thread Stampings

Here is the number of a recently finished Ebay auction for a pair of Campagnolo Record crankarms:

270476502779

http://tinyurl.com/yh75xac

This pair is a no date set, not sure if it's 151 or 144 bcd. My question is, when were Record arms made with the pedal thread stampings outboard of the pedal holes?

Kurt Sperry
Bellingham, Washington
USA