Add to Cart Quick view RCA 6293 (heavy duty variant of the 6146 series) NOS Vacuum Tube Tested 100 % RCA MSRP: Now: $44.99 Was: NOTE: I only have a small number of these New old Stock 6293 / 6146 Tubes. At some point the original boxes got damp and were not in good shape. The tubes are in new condition. Each tube is in a generic box. This Tube has been tested on a Dyna-Quick... MSRP: Now: $44.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $44.99 Was: Subtotal: Add to Cart