[TenTec] OT: Need advice checking out a stored 3-500

[K8JHR]

With some music instrument tubes and lamps, and some automobile lamps 
(more older than those used at present)  it was once fashionable to 
avoid touching and leaving greasy finger prints on the glass envelope, 
and the usual procedure is to wear cotton gloves when handling those. 
No big deal, but it is an easy precaution and keeps the glass clean, in 
any case.

Is anything like this a consideration with radio linear amp tubes?

     ----------------- K8JHR  ----------------------