ECC81 12AT7 CV4024 Brimar UK ring getter pieces Used Old Stock Valve (X205)
ECC81/12AT7WA/CV4024KB/AD Brimar UK declined big ring getter, black ribbed plate 1 piece Used Old Stock Valve (X202) Tested BK 600 80/89 strong On my tester new ecc81 test 89/89 upwards