Yan Bibiyan

Fantasy kids film
–Year: 1985 
–Year in film: 1930s ?  
–Country: Bulgaria 
–Who in clothing: boys ~5-11, sailor suits 
–Who in clothing 2: hist clothes  
–Available on DVD: yes ?    
–I own: no
–Clothing occurrence: very low ?            
–Rating: 3/10 *      
–Rating: ***
–Comment: One very young boy in a dark blue sailor suit. Also older boys and girls in sailor style clothes/collars. Mainly at the end. Main character is a 10 yo boy.

Bulgarian title: Ян Бибиян. YouTube clip Ян бибиян целия филм бг аудио.

This is a great and famous fantasy film. Based on a 2 part 30s novel. Made into an opera and there is a fund for a remake.

The boy pictured might be Georgi Lazarov (Георги Лазаров), but I think it's another (young) boy. For more info and pic see my recent post on my overalls blog (Info 2: Gli anni d'oro - actors). 

For the brief scenes rating ~3. Movie rating ~7.