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

[neechevoneeznayou at gmail.com]

perhaps solid or paper core (WW2 vintage Columbias for instance)

thickness.

size. large records were early, such as 14, 16, and 20"

joe salerno

On 3/3/2013 12:51 AM, David London wrote:
> I would like to know if it possible to guess approximately how old a 78 is
> by some of it's physical characteristics.  For example, here's a list of
> some things in common with most 78 records, that seem to change in
> correlation to age from oldest to newest.
>
> Start point:  one-sided records, no lead out groove,no paper label
>
> large paper label
> lead-out groove added
> change to small paper label
> added eccentric lead-out groove
> added lead-in groove
> first laminated pressings
>
> Is it possible to put approximate dates - even roughly like early/mid/late
> which decade, against things like this, when they were first/last used
> commonly? Are there other indicators of age that could be added to this
> list?
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-- 
Joe Salerno