This batch made 07/1984 was kept so many years in very good condition, clear and shiny tubes like yesterday made, not any sign of dirt or corrosion.

Price is for one tube, selected gain balanced = both internal triodes having the same gain (max. diff. allowed 0.2).

If more than one is bought we select them as matched gain pairs = 2 tubes with the same gain values for the 4 internal triodes.

Examples of measured data in pics.

Tube(s) will be sent without individual box, they were bulk box 100 items  + one piece of original datasheet + measured values for gain, very safe packaged.

We ship in max. 3 days after (usually next day) priority airmail with tracking number.