When I lined up 19 restored ECOs at Carlisle & Hershey years ago, the first question was always "Do they work?"

It would probably help you sell the meter if you posted a picture of it, and stated the condition of the mechanism.

Jack Sim

Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available