Angel,
My '70 does not have the oval cutout. I also have a '74 that does not have the oval. I had another '74 that did have the cutout. I normally look at the fork to determine the age of the early ones when the bike has been repainted. That doesn't always neccessarily work either; the '74 I still have has no fork tang at all (never seen that before), no holes in crown but does have club engraved in the top of the crown. I think in '75 they began the engraving of the word Colnago along with the club in the crown. I see the club in the fork tang of the bike in question also which I think is '74. Having discussed the minor variations in Colnagos during any given year with a few Colnagophiles we have concluded that these things did happen. The other '74 I had was unusual in that two of the lugs had the club cutout (the DT and ST lugs!) when normally the bikes from '73 were the last to have cutouts in all three lugs and in '74 there is only one in the DT lug. Perhaps the frame is later in '74 as opposed to earlier. I wouldn't be surprised if the '75's all had the oval. I'm still in favor of '74.
Brian Baylis La Mesa, CA
>
> Perhaps not worth mentioning but my 1973 (or 1974) Colnago Super has a
> slightly different BB where the down tube meets; mine does not have an oval
> cutout like the one pictured in the photo of the bottom bracket:
> http://ebay.com/
>
> Angel Garcia
> Long Valley, NJ
>
> snip:
> Looks to be 1974.
> Brian Baylis