Extra-clean  "pre-strike" Bach 42B-0 Bb Stradivarius trombone, .547 bore, gold lacquer over brass finish. Chrome / brass slide  is very close to perfect.
Serial #155,785
With original Bach 6 1/2 AL mouthpiece.
Good used "Pro-Tech" case (see photos)
*** Some minor dings (from mutes ?) to the bell flare, but no dents, no damage. 
 
*** Recommended!
 
HG