The best way to find out about a Martin bow is to become a member of the *********** site and post your question there...you will likely be asked to post a picture of the bow and the serial number...Larry Hatfield, who worked for Damon Howatt and then Martin for many years, will often show up and he can tell you everything you want to know about the bow...hope this helps...and btw you will likely not get anyone to tell you what a used bow might be worth these days...the market is so weak right now even those of us who tried to keep up with such things have pretty much given up
DDave