Thanks for the analysis. I have been away .... now trying to find a way to edit my ad and change '23' to '21' and say I am willing to trade it on a 25" frame touring bike....not familiar enough with the website to know where to go for edits....any assistance would be much appreciated!That looks to be a 21" frame. 0 is for 130 rear spacing, 21 is the size.
Thanks, Trailmix. I will endeavour to post a better photo but am unfamiliar with how to edit my ad....Definitely a 21" but the number is hard to read. Do you have any better pictures?