RCA VICTOR 50-series (Blues - Rhythm) US Labels and Company Sleeves 1949-1951
50 0000 - mar 1949
to
50 0141 - aug 1951
50 0099 - 1951
Range
Front
Back
Details
No 1
1949
to
.
Record care
No. 21-100-90-2
 Cut straight/notch  Glued left/right  
No 2
.
to
1950
No. 21-100-90-2
.........
.....
For sleeve details
(different colours/types)
See RCA No. 3/6
...
   Cut straight/notch  Glued bottom/right  
No 3
1950
to
1951
Boxed "45"
21-100-139-3
......
....
For sleeve details
(different colours/types)
See RCA No. 7/8
...
   Cut straight/notch  Glued bottom/right