We have not had many posting of RM's lately, so I thought that I'd update this thread.
Here is RM 2394 - 8.375" barrel (one of an estimated 38 in this barrel length), King Red Post Reflector Ramp Front Sight, with some KB custom stocks. I believe that this is the only barrel length that was not in 1/4th inch increments. It left the factory in May 1937 and was delivered to a Dr. A. A. Thomas in Indianapolis, IN. Obviously set up for target shooting, it was sighted in "at 20 yards with .38 Special mid-range ammunition using a 6 o'clock hold." The factory letter goes on to say that "when it was completed [it] was sent to Mr. Roper to fit a pair of Roper stocks to the revolver."
Enjoy,