CF Martin put serial numbers on their mandolins from 1895 right up until 2002 when they ceased production. They were not entirely sequential as for some years two ranges were used and at one point they switched to using the Martin guitar format, however they will normally decode to give a specific year. I also a tool to decode C.F. Martin guitar serial numbers
Martin Mandolin Serial Number :
Click herefor an idea of what it may be worth (via previously sold items on eBay)
If this page has been useful to you please help by spreading the word on Facebook, Twitter, forums etc.