The EWA brand was a 1970s export trademark most likely intended for the German market. This brand used Slava 2428, Slava 1601, and Luch 2209, among possible others. Watches bearing the EWA brand are typically identical to domestic production models aside from the brand on the dial.
Caliber: 2428 (26 jewels) Model: 033xxx Year: 1970s Notes: Export watch, Luch Watch Factory
Caliber: 2209 (23 jewels) Year: 1970s Notes: Export watch, Luch Watch Factory