I have just come across the following interesting footage on YouTube depicting Tibetans in the Indian town of Kalimpong that borders Tibet. It is said to be from 1957 and by the look of how the people dress and the conditions in the streets, etc., it does look like it is from around that time.
The person who posted it has the name “norsangnkunsang” and the video does not have any sound. I particularly liked the playful nature of the two traders as they did a mock sword fighting. They seem to be playing with real Tibetan swords and appeared risky to me.
I come from the part of Tibet that is very near Kalimpong and my Father used to do petty trades in Kalimpong prior to the Chinese arrival. May be at another time and place one of the traders could have been me.