1963 Gibson RB-250
This is one of the early post-war Gibson Mastertones with the re-issued flathead
tone ring. The rim is a full 3/4" of 3-ply maple, but it has the
appearance of five plies. There are two inserts into glue joints to "clean
up" the appearance of what was probably an uneven glue job. The cam tuners were
factory-installed and quite common for the period.