EL84/6BQ5 tube identification

[ljbrandt]

Would someone kindly help me ID these two EL84/6BQ5 tubes. I received them as part of an amp purchase and the previous owner threw them in as part of the deal. Just wondering if they are decent tubes.

Distinguishing features:
Tube 1 - I believe is an Amperex. X6A inscribed at bottom. X2 just above the "x6a"

Tube 2 - UBS in diamond. Made in USA. 6 BQ5 and GJ.

 

[Hi-FiGuy]

That looks like an Amperex tube made in Holland that was sold to GE (Glass Etched Part Number) then sold to and rebranded by CBS.

 

[ljbrandt]

There are actually 2 separate tubes..but thats a good start

 

[Sam Cogley]

First tube is definitely Philips, made in Holland. Possibly sold in the US as an Amperex, possibly rebranded for OEM use. Second is a GE rebranded for CBS. Everyone bought and sold each other's tubes in that era.

 

[ljbrandt]

First tube is definitely Philips, made in Holland. Possibly sold in the US as an Amperex, possibly rebranded for OEM use. Second is a GE rebranded for CBS. Everyone bought and sold each other's tubes in that era.

Thank you sir!
Any idea what these tubes are worth on the used market?

 

[Sam Cogley]

Depends on test results. If they're weak, noisy, or microphonic, not much. If they're strong performers, whatever the market will bear. Look at eBay completed sales to get an idea.