There are some workarounds for the missing 1L6. A guy over on
rec.antiques.radio+phono makes an adaptor to use the older loctal tube, and
there's a sub for the 1L6 if you just want it to make some sounds...although
the sub (can't remember the #, someone will chime in with it) doesn't have
very good h.f. performance.
Many good resources on the web, in case you're not already aware of them. A
good place to start is he
http://trans-oceanic.fortunecity.net/index.html
jak
"N4BUQ" wrote in message
...
Wanna double your investment? 
What are you saying Barry? It's worth $6.00 {?} ;-P
Yeah, I'd give you $6 for it! 
Sounds like you're going to have some fun with it. I'm finishing up a
restoration on a Zenith Transoceanic H-500. Stripped and recovered the
cabinet
and am working on getting the electronics done. Unfortunately, this one
didn't
have the expensive 1L6 that it really needs to work properly.
Have fun,
Barry - N4BUQ