Hamilton Factory Balance Staff for Swiss Traffic Special Pocket Watch, No. 607705 - New

Hamilton Factory Balance Staff for Swiss Cortebert Pocket Watches sold by Hamilton as Traffic Special, No. 607705, new in envelope. See image for further details. Honestly not sure if this is for the 669 or 670 but I'll keep looking - perhaps it fits both. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.