Card backside with RKO logo.
Here's the same series but printed in the Czech language and published in Prague. It's fairly certain these date from 1938 because by the following year, Czechoslovakia was occupied by the Nazis.
Kejchal, Smudla and Profa.
The card back displays the same RKO logo but reads, "PRAHA II- VACLAVSKE NAM. 51" (PRAGUE II- Wenceslas Square 51) and "Sněhurka a sedm trpasliku" (Snow White and the Seven Dwarfs).
This next set employs the same artwork (with different color shading) for all the Dwarfs except Dopey. And Snow White appears with the Prince from a Gustaf Tenggren drawing. Copyright "W.D.P."; text in English. Each card measures 3.5" x 5.5".
The cards were used as store premiums. The reverse side of this set each has a light ink stamp, "With Best Wishes From Foy's". Sold in auction by Hakes, March 22, 2012 for $336.49 (USD).