The simplest way to find out is to ask!
        We don't ask you to fill in a form here,  just send us an email asking your question. We really try and respond within a day or two.  If we don't have the information already, please include your telephone / fax number and a postal address (if you want a catalogue, and for any deliveries). 
Or telephone us, or even write!  There's an answer phone for out-of-hours - speak slowly and clearly!

A few things we are unlikely to have.
     NOS audio output triodes and tetrodes - consider KR Enterprise replica's
     Mullard ECC83
     NOS CV5112-3A/167M
     Telefunken audio double triodes