Type: 7189A E84L
Manufacturer and factory: Tungsram Hungary
Year of production: 1960-70's
Structure's features: gold pin
Conditions: NIB new in box
Rating : 1
Original package : yes
We found something truly unique. Many consider the production of Tungsram's EL84 something special and is placed at the absolute top of the entire production of EL84. But this is a rarity in the rarity, it is a special production of 84 made for National brand, whose characteristics are those of the E84L (10000 hours life) that is the most refined production of Philips and Siemens with golden pins. There is no trace on the web of any specimen for sale or that has been sold of Tungsram 7189A special series.
The Tungsram production is certain and recognizable, as well as from the Made in Hungary on the glass, from the classic flashing silver stained deposit that covers almost all of the bulb, a characteristic of this manufacturer. This is an effect due to magnesium during the construction and creation phase of the vacuum. These spots can be change significantly from tube to tube. We have a limited quantity of 10 available at the moment. The tests performed have an extraordinary homogeneity of emission and transconductance, all 10 perfectly reflect the data reproduced on the datasheet and deviate from each other by a maximum of 3% confirming that it is a truly special series.
THE PRICE IS INTENDED FOR THE SINGLE TUBE IN CASE OF MULTIPLE ORDERS THE BEST MATCHED SAMPLES WILL BE DELIVERED
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