[78-L] RCA Victor reverse side "spider web" etching name?

[Eric Jacobs]

On the reverse side of some single-sided RCA Victor discs can 
be found an intricate etching displaying "RCA Victor" in large
1.5-inch letters, together with the RCA logo and "His Masters 
Voice" logos in 1-inch circles with a background covering the 
entire disc side consisting of interconnected spider webs.

It looks so cool.  Maybe it's commonplace, but I've not seen
too many discs with this pass through my studio.

I'm happy to email a scan of this off-list to anyone who has 
never seen this reverse side etching.  Just email me privately.

Anyway, is there a name for this intricate etching?

How (types of recordings) and when (time span) was this etching 
used?

I've only seen this reverse-side etching on my 1940s RCA Victor
78 RPM test records (EQ test tones - anyone else collect these?) 
and now with these RCA Victor test pressings.

For shellacs, they're very quiet.

Thanks so much,

Eric Jacobs

The Audio Archive, Inc.
tel: 408.221.2128
fax: 408.549.9867
mailto:EricJ at TheAudioArchive.com
http://www.TheAudioArchive.com