This listing is for 2 NOS (New Old Stock) tubes that are brand new and sealed. The tubes are TELEFUNKEN UAF42 - WD142 - 12S7, made in the late 1950s in Ulm, West Germany. Each tube features a stamped diamond shape on the bottom.
QUITE RARE IN SUCH CONDITION!
Shipping via registered airmail with tracking number. Import fees for U.S. buyers are included in the shipping cost under the new tariff regulations. Other methods available upon request.