[78-L] 1952 lacquer record question

[Kristjan Saag]

The early 1950's was a transition period between 78's and 33's/45's and 
coarse groove/ microgroove and saw quite a few microgroove 78's 
introduced, as well as Deutsche Grammophon's variable microgroove (1950).
Philips issued both 7'' and 8'' microgroove 78's in Europe and there 
were similar efforts in the USSR and the US. Not only for instantaneous 
discs.
Kristjan

On 2022-08-25 19:15, Malcolm wrote:
> Hello to whoever is left on this list! I recently received a 1952 NBC 
> Reference Recording #113 - a sound effects record. It's called 
> "Buzzing Sound" and penned in below that is "Flying Saucers". It is a 
> 78... BUT it looks to me as if it is meant to be played with a LP 
> stylus. The grooves per inch are high and the groove itself is far 
> thinner than that of a normal 78. Was this the case with other NBC 
> instantaneous discs from the time? - I want to avoid damaging the 
> recording by using a 2.7 mil 78 stylus if that is so. Thus my 
> question. Aloha, Malcolm R 
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