These have a number embossed on outer edge - there is an 01, 11 and 17. On the underside of the 2nd ring there is either a 3 or 4 embossed. All are VNM. $25 each or all three for $60. Preferance given to local pick-up or can pick up at the Washington, PA show next weekend. I will have a lot of insulator oddities. Hope to see you there!