Auction is for two (2) tubes, matched pair within 5% of rare ECC88 6DJ8 made in EI Yugoslavia tube plant under Philips licence.
They are A frame type made by Philips technology and GA Philips code for ECC88 6DJ8 is etched on every tube together with date code and EI tube plant code.
Carefully tested and closely matched on calibrated Tesla BM215 tester.
See also my other auctions and visit my eBay store for more NOS audio tubes!