Old stock. The tubes are new and never used. 

Made in Czechoslovakia

Actual measurements for Tesla E88CC (same date code EF154 = 03.1979):

Tube #1: Ia1 = 14.8 mA; Ia2 = 14.8 mA;

Tube #2: Ia1 = 14.4 mA; Ia2 = 15.2 mA;

where 100% is Ia = 15 mA;

The parameters are measured at Uf = 6.3V, Ua = 90V , Ug = -1.3V

Our tubes are measured by the professional equipment L3-3 

Payment:
I accept PAYPAL. Payment in USA, shipping from Ukraine (with tracking number)!

Shipping:

I combine all items for the best shipping price.

For US buyers need signature on delivery. 

 I shall send it during 3 business of days after reception your payment.

Let me know if you have any questions!

Thank you and happy bidding.