[78-L] Approximating 78s age by physical characteristics

[Milan Milovanovic]

I also own some European Odeon (recorded in Germany) with eccentric locked 
groove, from 1935.

M.


----- Original Message ----- 
From: <david.diehl at hensteeth.com>
To: "78-L Mail List" <78-l at klickitat.78online.com>
Sent: Monday, March 04, 2013 9:31 AM
Subject: Re: [78-L] Approximating 78s age by physical characteristics


>>> added eccentric lead-out groove
>
>>Victor started around 1921 with an eccentric groove, but as the 20s went
> on others had lead outs but not all were eccentric. By 1933 I think
> most had eccentrics.
>
> Victor had a patented automatic brake system which included the eccentric 
> groove. No one but Victor and its overseas affiliates were licensed to use 
> it. In November of 1934 RCA announced that it would begin allowing other 
> companies to use it. No reason was given but I assume there was some kind 
> of quid pro quo with the jukebox industry. I've seen European discs from 
> as late as 1937 with simple runouts.
> DJD
>