With the database of known serial-numbered banjos at hand, we can do some fun analyses!
Here is a re-cap of all the known RB- Flatheads by style (as of 1/1/2010):
|Analysis of Pre-war 5-string Flathead Banjos|
As you can see, the vast majority of these desirable vintage banjos were actually styles 3 and 75, the low-end of the 1930's Gibson Banjo Product line
There are many "gaps" in the batch runs, as far as the "known" banjos as of today. If you know anything about these banjos: Looking for Banjos with Serial Number , I would be delighted to hear from you - click here: Information on Gibson Serial number. Attach photos if you have some.