This is a military type 5R4 vacuum tube full wave rectifier, made by RCA.  It is the type 5R4GY and has the brown low loss micanol base.  This tube is dated 1965 and also has the early dual support rods between the plates, and the round mica top getter.  It has the early type "fishing pole" spring top filament supports.  This tube can be used anywhere a 5R4 of any type is used, also replaces any 5AW4, 5U4, or 5T4.  Tests as unused at a very strong 66 on our Hickok USM118B tester where 50 is minimum good and new tubes test above 60. We have a number of these in stock so the picture is representative, and this one is in a white box.   Satisfaction guaranteed.  IL residents pay 10% tax, outside of IL there is no tax.  We ship worldwide, all shipping is by first class mail only.

TERMS OF SALE: Serious bidders only, please.  Payment by PayPal is expected at auction close.  A PayPal account is required to bid on this auction.   We can combine shipping if you win other auctions of ours, however the other auctions MUST END WITHIN 3 DAYS OF THIS AUCTION.  We ship by first class mail to the name and address of the winning bidder provided to us by PayPal and/or eBay.  We add $1 to the shipping to cover handling fees. Please use the eBay calculator to estimate the shipping fee before you bid, as postal rates increased. We declare the full value on the customs forms for any international shipments.  International bidders should be aware that first class mail cannot be tracked and that processing delays up to several weeks can occur in customs, which is beyond our control.