[78-L] What's this?

[David Lennick]

If I'm reading the table of matrix prefixes correctly, it dates from 1962, 
which seems very unlikely..unless this was a very late frequency response test 
disc, since broadcasting studios and film production studios still used the 78 
speed through the late 60s.

Hmmm.

dl

David Weiner wrote:
> Anyone have idea of the purpose of this? And when it's from?
> 
>  
> 
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem
> <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&&item=390011357240&ssPageName=ADME:B:ONA:US:1120> &&item=390011357240&ssPageName=ADME:B:ONA:US:1120
> 
>  
> 
> Dave W.
> 
> _____________