Here she is
The serial number is actually R-0503. However, the contents of the amp is pre500 mojo. This is a 1992 Leather covering:
Revision: RF-1D
PT: 561136/EIA606-228
OT: 562100/EIA606-034
Choke: 550381/EI606-226
Loop: Serial
(I'll crack it open later to get photos of the internal mojo -- and later on --hopefully this weekend-- I can get some youtube videos posted)