No, Jerry - I had a further conversation with Klaus -
he showed me the reference in the book from Hans Reckendorf "Taschen und Trageweisen von Faustfeuerwaffen in Preussen..." -
My holster was made for the
Feldartillerie in 1887 - they used the RR M/83 since 1885, and their holsters for the M/79 had been shortened -
but holsters made after 1885 for them look like a shortened M/79 holster -
but have been originally made for the short M/83 -
so this holster here was another model made for the Reichsrevolver M/83 in the fashion of the revolverholster M/87 (for the revolver M/79)
hope my school english is good enough for explanation