This set of 3 Mullard and Philips NOS tubes, model EL34, are matching and have been tested. These vintage tubes are in used condition and perfect for those seeking to restore or upgrade their vintage audio equipment. The EL34 is a highly sought after tube known for its rich and warm tone, and this set includes both Mullard and Philips brands - two of the most respected names in tube manufacturing. Don't miss out on the opportunity to add these rare and high-quality tubes to your collection.