I have 15 4hr and 26 30-min Duncan Meter Mechanisms. These are used but work and keep good time (+/- 2 mintues) and each will be tested before they're shipped. They accept quarters only or nickels, dimes, and quarters. Please let me know if you have a preference. I can also send photos of each meter if requested and the first buyers will get the best quality. Some have numbers written on them or serial number stickers...both could easily removed and don't affect function. I also have several meter housings and lots of spare parts so if you'd like to build a whole meter let me know. I would like to get $30 shipped for each mechanism. I can let you know what the shipping discount would be for multiple pieces. Thanks for looking and if you have any questions shoot me an email or IM.