All I can find is a serial number on the mount and on what I beleive is the welch plug. The number is G2501965. I would appreciate any help with solving this mystery.
Thanks for the help. The dealers were no help but i found a customer service number for johnson and they have the ability to search by serial numbers and give you the model number and year. The johnson/envirude cust. service number is (847)-689-7090.