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.