Price is for one matched pair Telefunken RS237 211 VT-4-C slightly used tested NOS. I found them in the attic from my grandfather’s collection saying NOS but I listed them as used. This is another interesting way to enjoy the good sounding quality of the famous German telefunken brand in place of 211/VT-4-C because they are quite similar for plug and play immediately. The tubes tested at Ua: 1000V, Rk: 1k, Rg: 470k as shown in the photo at 84mA and 833mA with 53mA-55mA = 100%. They are tightly matched pair super rare and sought-after itms. They were all made for military purposes in 1942. Local pick up or do-it-yourself shipping arrangement is welcome. The tubes will be packed double boxes in a hard box to make sure they are safe to your door. I am not responsible for the damages during shipment. Please ask me any question if unsure. Thanks

P/S: The shipping fees in the listing is by regular mail (normally Vietnam post) taking from 12-25 days depending on buyers' local customs. To some regions, it can take even longer than that. Besides, Vietnam post is not always available to some countries in South America, Northern Europe or Africa. Please ask me before paying. If you want to use express shipping services like DHL, Fedex or UPS express taking 3-7 working days, you have to pay an extra of around $68.75. (For order over $1000, Express shipping service is a must. Please wait for the invoice to pay). Please let me know so that I can send you an invoice. If the item(s) purchased may not arrive or faulty, please don't hesitate to contact me before opening cases on ebay. I am willing to reach to a solution and make you completely satisfied. Thanks a million