Secondly, I have a project that I'm trying to raise funds for and have some other expenses that are coming up. So I'm maybe selling my Duo Gravis
I have a gig with it on November 14th but I can pack and get shipped out on the 15th of November if you buy. If it isn't purchased by Black Friday, I'm hanging onto it though! 
I tried this slide back to back with WVU Music School Dean Keith Jackson's 6B (affectionately referred to as "Captain Crunch")'s slide. The leadpipes definitely changed at some point and this one fits "regular" trombone shanks much better than the other model. Elliot/Black/Bach shanks fit a comfortable 1" as they should. Or at least mine do.
Both rotors seal well and produce a pop when you pull the tuning slides. All 4 tuning slides move well. Has the original thumb/thumb configuration as well as the "ergonomic" index finger holder.
I can also include a spare neckpipe, slide receiver, tuning slide, and tuning slide receiver. I was planning on using these parts for a project but obviously I wouldn't need them if I sell the horn! I can ship with a very good condition Reunion Blues gig bag or without case.
Horn + parts + case + shipping (CONUS) = $1700. Willing to accept offers without the spare parts/case etc. Also willing to sell just the rotors if the price is right.
E-mail is preferred. (See the little email icon on the left). Snatch it up before I change my mind!
EDIT: Will post pictures tonight!