There is a model number on both top and bottom but no serial number that I could see... Only thing I know other than model numbers is there's an "87" on there next line below model number of which I take to be year built.
That will be all you need. Give that to your local rep and he can get prices for you. Pix included, just my orange set not my blue ones! So you can know I put my dealers kids thru college! I have bought a rail or two!