[78-L] RCA Victor sets - M AM DM designations.

[David Lennick]

AM = Slide Automatic, discontinued in 1940 or '41. Quite often the DM sets have 
disc numbers much higher than the M or AM sets because drop automatic was added 
later (although it had existed around 1930 for a brief time).

dl

Thomas Stern wrote:
>   This has been discussed before, could someone refresh my memory:
>   I know there are MANUAL and AUTOMATIC sequence sets, but didn't realize
> the records
> also had different catalog numbers, and what is the third variation???
>   [This question arises from seeing the booklet in DM 566 Peter & the Wolf,
> which lists
>     M 566 (15442-15444), AM 566 (15445-15447), DM 566 (16122-16124).  The
> records in DM 566 have
>     numbers in the wax and in parens on the labels 035433-035438. The album
> is stamped on the cover
>     with the credits, no other notes, but includes a 4pp insert; I've seen
> other issues of this album
>     with color illustrated cover and notes inside the covers, don't know
> catalog nos,.]
>   Thanks!
>   Best wishes, Thomas.
>