MGM Details 1956-1960
MGM - Germany/ Electrola Co up to 30.09.1956 
78 rpm
MGM  0101
to
MGM  0183 
 
MGM   180
to
MGM 186
Odd numbers   431, 663, 0768, 0805, 0811, 841, 865, 874, 3074
45 rpm
SP  1001
to
SP  1146
 
SPW 180
to
SPW 188
Counterparts to the 78 rpm
MGM - Germany/ Electrola Co  01.10.1956 - 31.12.1958 
Export-No. 
Domestic No.
Artist
MGM  952
M  20674
David Rose
MGM 1006 
M 20675 
George Shearing
MGM 1047
M 20676
Silvana Mangano
MGM 187
M 20670
George Shearing 
MGM 188 
M 20671
Gene Kelly
MGM 190
M 20672
Rev. Kelsey 
MGM 191
M 20684
Connie Francis
MGM 192
M 20673
Marvin Rainwater 
MGM 193
M 20949
Sheb Wooley
MGM 195
M 20979
Conway Twitty
MGM 196
M 21009
Connie Francis 
MGM 197
M 21010 
Tommy Edwards
In Austria and Switzerland 45 rpm MGM records with both numbering systems were available. 
MGM - Germany/ Electrola Co  01.01.1959 - 31.12.1959
MGM  198
M 21064
Conway Twitty
MGM 199
M 21072
Sam "The Man" Taylor 
MGM 200
M 21100
Connie Francis
MGM 201
M 21125
Conway Twitty
MGM 202 ST
STM 21127
Art Mooney Orch. 
MGM 203 ST
STM 21128
Leroy Holmes Orch. 
MGM 204 ST
STM 21129
Leroy Holmes Orch. 
MGM 205
M 21144
Tommy Edwards 
MGM 206
M 21157
Dick Lee 
MGM 207
M 21158
The Impalas
Sorry, I ran all the way home - US= 03/ 59 
MGM 208
M 21172
Connie Francis
If I didn´t care - US= 03/ 59 
MGM 209
M 21193
Connie Francis
Lipstick on your collar - US= 03/ 59 
MGM 210
M 21196
Tommy Edwards
My melancholy baby - US= 04/ 59 
MGM 211
M 21200
Jimmy Boyd
I love you so/ Cream puff - US= 04/ 59
Deutsche Grammophon pressed Electrola MGM material until  06/1959.  All Electrola MGM records could be ordered until 31.12.1959 and were still available in stores until 1960. 

MGM distribution switched to Polydor in July 1959. Therefore up to 1960 both companies had their MGM releases in the shops. 
The Polydor 1960 dealer-catalog had no MGM records listed (records available until Sep 59).
Within a few months, Polydor released 3 new issues and 7 Re-releases of older Electrola material.
With the start of 61001, a new sleeve layout was designed for MGM, Brunswick and Coral. 
This was the POLYDOR/MGM output for 1959:

Record no.
Artist
Details
MGM 61 001
Connie Francis
(a Re-Release) = M 21100 
MGM 61 002
Connie Francis
(a Re-Release) = M 21193 
MGM 61 003
The Impalas
(a Re-Release) = M 21158 
Demo exists, not listed in the catalog 
MGM 61 004
Conway Twitty
Mona lisa 1st original press US= 06/ 59 
MGM 61 005
Connie Francis
Plenty good lovin´  US= 08/ 59 
MGM 61 006
Conway Twitty
Danny boy/ Halfway to heaven  US= 09/ 59 
MGM 61 007
George Shearing
(a Re-Release) = M 20675 
MGM 61 008
George Shearing
(a Re-Release) = M 20670 
MGM 61 009
Connie Francis
Among my souvenirs  US= 10/ 59 
MGM 61 010
Silvana Mangano
(a Re-Release) = M 20676 
MGM 61 011
Leslie Caron/ Mel Ferrer
Hi-Lilli, hi-lo (Re-release of MGM 0142) US= 1952 
MGM 61 001 was announcced as to be released in Stereo also, but is never seen or heard       
of within the last 50 years. There was no other Stereo single release.         
In 1967 Polydor/ MGM started e relatively short lived 61 200 export line.