(no Holmes picture) (no Watson picture)

Adaptation

Голубой Карбункул

This TV Film was aired on 13 January 1980, by Belarusfilm.
IMDb: Голубой Карбункул 
Letterboxd: Голубой Карбункул (link not verified)

Canon basis: The Adventure of the Blue Carbuncle

Sherlock Holmes played by: Algimantas Masiulis
Dr. Watson played by: Ernst Romanov

Turn on <canvas>.
Cast
Algimantas Masiulis as Sherlock Holmes
Ernst Romanov as Dr. John H. Watson
Edgars Liepins as Henry Baker
Juris Strenga as Insp. Bradstreet
Oleg Korchikov as Breckinridge
Irina Pechernikova as Catherine Cusack
Valentina Titova as Countess of Morcar
(uncredited) as Maggie Oakshott
Viktors Zvaigzne as Peterson
Boris Galkin as James Ryder
Valentin Bukin as (uncredited)
Elena Volochina as (uncredited)
Leonid Rimar as (uncredited)
Vladimir Potapov as (uncredited)
Igor Dmitriev as Maldeley