ORIGINAL ELGIN RESILIENT 16'S/18'S POCKET WATCH SPRING

YOU ARE BUYING 1 OLD STOCK IN ORIGINAL GREASEPROOF ELGIN PACKAGING,FACTORY STAMPED, T BRACED, RESILIENT Steel Pocket Watch MAINSPRING for ELGIN 16's and 18's size movements........... Each of my springs comes from a retired watch repairer..............They are unused and still have their factory coating and packaging.....they are in excellent condition .............Each spring  measures approx. 520mm long x approx. 2.60 mm high x 0.22mm thick.................The inner coil measures approx 5.80mm to 6.00 mm inner..............the height of the t.brace is approx 3.34 mm......the outer hole is approx 1.46 mm long.......the distance from the t to the hole is approx 7.90mm......I have used these springs successfully and they are easy to work with,they can also be used in large Walthams with a file here and there!!WORLDWIDE POSTAGE BY AIRMAIL IS FREE. (Any questions,please don't hesitate to  email me.)