Vegetable salad the way my grand aunt made it

This recipe is probably the most traditional recipe that I had a chance to try for a quarter of a century.
This is how I remember it being served by my grandma and grand aunt. My aunt did not add eggs, however one of my aunts sneak in a herring from time to time.

The salad (is Polish Sałatka Jarzynowa) was and still is made at least twice a year by Poles - for Easter and Christmas. It varies in different houses but the base of it is the same.
It is based on the similar vegetables that are used to make the Sunday Broth Soup - called Rosół - carrots, celery, parsley.
In the old days, the salad was made with the same vegetables as the soup to minimize the food waste. That is why it has become so famous in every house in Poland.