Here we have a legit 80s flanger, blessed with the revered Panasonic MN3207 bucket brigade chip. That lends it a natural warmth and complexity, plus the controls offer plenty of range to tweak. They don't make them like this anymore!

Model: Maxon FL301 Flanger 
Made: Japan, 1983 approx
Serial: 32703
Type: flanger
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)