I have a set of Gipiemme Special cranks. I believe they are pista cranks as it only takes one chainring but the word, pista is not written on the cran ks. I would like to know more about these particular cranks, ie age and qua lity of the crank etc.
There length is 165mm but there are some numbers on the cranks that I do no t understand and may be the key to identifying age and model etc.
RH drive crank: Special 165 117.04.84
LH crank: Special 165 118.04.84
I look forward to getting an explanation of the numbers on my cranks and am grateful for any help given to me.
With best wishes
Leon Bach-Samuel [Sawston, near Cambridge, UK]