Quick view Ten-Tec 670 Century 21 Electronic Keyer in Very Good Condition Ten-Tec MSRP: Now: $49.99 Was: NOTE This item is held on reserve for the buyer of the Century 21 Transceivers I have listed. This Ten-Tec 670 Century 21 Electronic Keyer, is in Very Good Condition. This one has been tested with a Century 21 and it is working great. It... MSRP: Now: $49.99 Was: Quick view Qty in Cart: 0 Price: MSRP: Now: $49.99 Was: Subtotal: