BRIMAR 6060/CV4024/12AT7/ECC81 RARE YELLOW-T TUBES.THESE ARE LOW USE TESTED STRONG PAIRS. These are the early yellow decal T-logo that are excellent quality tubes. Rich British tube tone, made at the Brimar Footscray, U.K. factory, long life late 1960s vintage. This rare tube is the Brimar answer to the Genalex A2900. It has a similar construction to it. These are sometimes called the "Yellow-T" tube due to the large capital letter "T" in a yellow triangle on the glass. The Yellow-T tubes are remarkable for their air, realism, and seductive warmth, and unfortunately are getting as rare as the GEC A2900 tubes. These tubes are available for $99.00 per pair including free world wide airmail shipping and no paypal fees. Tested and matched on my B&K 747 calibrated tube tester.