1980 S&S Rainbow 26

Hey Bmx museum, here's my all original S&S cruiser except for the tires and most likley a chain guard. I still can't believe i scored this bike from original owner. Its been sitting in his garage in Long Beach for the last 30 years! It's going to get alot of use now cruising Huntington on the weekends. If there's anyone that knows serial number history or how to read them let me know. Thanks!.....I recently included a picture of some changes to my ride. New Gary Turner bars and layback seatpost, Brooks saddle.