In auction a pair of  5687 General Electric, with black plate and copper rods. High quality Tube, they are selected and tested with Hickok i177b, where a new tube has got 7,0 mA/V. One tube measures 6,75 and 7,0 mA/V. The other tube measures 7,0 and 6,75 mA/V.

So the seem slightly used, better than 95% of the transconduttance of a new tube.

Please, look the photos for the measured values. A very good match between all the triodes.

I have a lot of tubes in other auctions. Ask me if you need other tube types.

IMPORTANT for WORLDWIDE eBayer:

I ship this item from ITALY with registered mail and I can ship worldwide.

ASK ME FOR EXACT SHIPPING COST BEFORE YOUR BID

If you live outside Europe you have to remember that delivery time depends olso from your local Custom and Post services.

Please check other items that I have on sale, I can combine shipping!

For any further questions please contact me.

I accept also payment by Bank transfer, thank you.

You are Welcome!

IMPORTANTE per eBAYER ITALIANI (Italian eBayer only):

Spedisco questo oggetto dall'Italia con Raccomandata.

Il ritiro a mano è sempre graditissimo.

Ho diverse valvole in vendita. date un'occhiata alle altre aste. Posso combinare la spedizione e farvi risparmiare sui costi di spedizione.

Per qualsiasi ulteriore informazione sono a vostra disposizione.