Hi,
 
I have a number of vacuum tubes I need to sell, and I was looking for recommendations on where to sell them.  I'd rather sell them as one big lot somewhere, though I realize it might make sense to sell some of the other tubes (Siemens, Telefunken) by themselves.  Are those tubes usable in headphone amplification systems, so I could sell them on here?
 
Here's the list, if that helps:
 
2 Philips 6922
GE/HP 8068
GE SR4
Philco 12SA7
RCA 6A7
RCA 6SN7GT
5 TELEFUNKEN ECC86 (valuable?)
3 TELEFUNKEN 288 (fairly valuable?)
3 UKNOWN TELEFUNKEN (roughly same size as 288)
4 HONEYWELL 12AU7
RAYTHEON 5U4GB
2 GE 6Y6GT
LAFAYETTE 6SN7GTB
RCA 5692
LAFAYETTE 6DQ5
MULLARD 12AX7A
SYLVANIA GB7044
SYLVANIA 12AX7A
GE 6BQ5
SIEMENS 188CC (valuable?)
SIEMENS 288 (fairly valuable?)
Lafayette 12BH7A
RCA 6JD6
2 LAFAYETTE 6EB8
2 RCA 12AX7A
2 LAFAYETTE 6AU8A
LAFAYETTE 3B76
RCA 3Q5
3 Amperex 8416
GE 12AT7
Sylvania  5963
GE 7239
RCA OB2

Others may disagree, but if you are trying to sell them in one go, I would suggest trying to sell them to some retailer that specializes in selling tubes. It's unlikely any individual would need all the tubes you have.

No relation to any of these, but a couple retailers that come to mind are Upscale Audio (audio equipment retailer who also sells a lot of tubes) or Tube World. I'm sure there are others I don't know about.