This one sounds great: unironically excellent. I like it better than the Boss equivalent, it sounds richer or something. 

Model: Behringer BO100 Blues Overdrive 
Made: China, 2009
Serial: S0535382402
Type: overdrive
Power Input: standard 9v DC centre-negative (supply not included)
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)