Brought these tubes about 6 weeks ago from bluemeanieLINK, as said in his post matched pair with little use. A bit more info these are copper grid postswith round Getters so pretty high up on the ECC83food chain. Looking at the date codes one is 1962 and the other looks like 1960, but is a bit worn so could be 62 -any way early 60's made in Blackburn. Have used them my self for just a few hours as I now have some 50's long plate square getter so these are now not needed. They do sound very nice. Looking for £45 shipped.