IMHO, the 'golden era' of efficient layout and optimal use of components
began in the '30s and had, more or less, ended by the late '40s early '50s.
That shield sleeve looks costly to make and install compared to not needing
it at all. I agree with Phil that it is likely a last minute 'fix' for a
problem that should have been found with the prototype. The bosses used to
tell us, when there was a last minute change [technical or marketing] "fix
it, but don't change anything".
It seems that there is another golden era with these new ultra compact
devices like iPods and cell phones where they cram RF, digital and AF
circuits onto tiny PCBs and run them off a common no voltage power supply
and get very good performance.

Neil S.

"Phil B" wrote in message
news4Owj.9074$Sw6.1791@trnddc06...
Beitman 1950, page 128 (you need djvu to read them)

http://www.schmarder.com/radios/beitmans/index.htm

Schematic shows it as a shield around the cap from volume to V3 grid.

These days we'd probably mount the cap somewhere and run a shielded
cable but in point-to-point the components themselves often double
duty as 'connecting wires' so they've constructed a shield around it.

Looks like a brute force, last minute fix for a poor chassis layout
problem. It looks like the point to point run is longer than just the
capacitor leads would allow.

Phil B