HR Mainspring No. 893 for Enver Rensie & Phinney Walker Clocks - Steel

HR No. 893 Mainspring for Enver-Rensie & Phinney-Walker V⅞ Travel Clocks the 1940's and beyond. Could also very well fit in other Travel & Alarm clocks as well. Note while the mainspring is new the envelope has been handled quite a bit over the years. See image for precise mainspring characteristics.