Thanks for your reply Dave. I had a suspicion that this might be the case, as you say the font of the stamping is different. I guess what does seem strange to me is that the number 626/47 carb is fitted to the 1972 Triple range, and the 626/61 range was fitted the the 1972 range. Why bother to change the numbering, the carb specification is the same, even though there were changes the Rocket 3 specification for 1972.
The 1969 range was fitted with 626/14 626/15 626/16
The 1971- 1972 range was fitted with 626/61 626/62 626/63
The 1972 range was fitted with 626/47 626/48 626/49
The only difference between the 1969 range and the later years is the throttle slide changing from 3 to 3.5
Rob