Vintage Olds NR20 (Aka Blessing B78) Tenor Trombone w/ F Rotor - Used

Description

Up for sale, a vintage Olds NR20 F-rotor trombone and case.  This horn looks like it has survived the years fairly well, there are no significant dents or dings.  I see a tiny ding in one of the tuning slides (pictured) but otherwise this guy is really straight.  The slide is smooth and is in decent shape.  F rotor works smoothly, case looks relatively good.
The only negative I notice is some finish corrosion around the rotor valve itself (pictured).  It appears stable currently but this could eventually be a trouble spot.
I read that this model is (or at least is rumored to be) a stencil horn actually made by Blessing (the same as their B78).  I couldn't find any Olds NR20's for sale but the Blessing B78's I found seem to have asking prices in the 00-00 area.
Comes as pictured.  Please google this model for further specs if needed.
US bidders/buyers only please.  This will ship tracked and insured.