It's the most iconic of all chorus pedals, and it sounds beautiful. Lush, rich, warm and wobbly, all sorts of awesome. This one dates to 1981, so it's a pretty early 'green label' example. It's had the small mod to run on a regular 9v supply, which is handy. The LED doesn't work, but you'll know when it's turned on... priced accordingly. 

Model: Boss CE-2 Chorus 
Made: Japan, June 1981
Serial: 674305
Type: chorus
Power: standard 9v DC negative power supply or 9v battery (not included)
Equivalent New Street Price (Approx): N/A
Mods: modded to run on standard 9v negative power, battery compartment screw replaced
Accessories: none

Condition Notes: used, no major marks. Tested and fully functional. Note the LED doesn't work as mentioned.
Overall: good condition (7/10)