If you can confirm or deny these dates please The basses in this series have the following features, unless otherwise noted, neck through construction, cresting wave headstock, cresting wave body, finished Padouk fingerboard, 33-1/2" scale, 20 frets, Schaller Deluxe BM machine heads, combination tailpiece/bridge assembly with string mutes.This bass is the first bass model that Rickenbacker produced.
Please be aware that some instruments manufactured in the late '50s cannot be interpreted by this decoder.
Featuring a bound neck-thru body, triangular fretboard inlays, dual trussrod system and Schaller Deluxe tuners, the Rickenbacker 4003 is a force to be reckoned with.
This excellent bass guitar is widely regarded as one of the best in its class, and comes complete with that familiar Rickenbacker bass tone.
Click on the one that appears to be the type you have on your instrument!
The code for Rickenbacker hollow body guitars made from 1958 through December 1959 reveals some Model information. It is possible to find more information through factory invoices.