Philips ECC82/12AU7 - Made in England. 1960's vintage. Made in Great Britain for Philips by Mullard. Back in "The Day," Philips owned Mullard, so it was common for Mullard-made tubes to be branded Philips, Amperex, Valvo, etc. Look for this tube to have that famous Mullard midrange... warm, smooth, and nice detail. For more info on the Philips factories, click here.