From 1974 to 1995 Breskovski had been research associate and curator of the paleontology collection at the National Museum of Natural History in Sofia.

[4][2] He contributed to the collections at the natural history museums in the Bulgarian cities of Elena, Rousse, Razgrad, and Shumen.

In later age he tried to reconcile his various hobbies of collecting stamps, pocket calendars, phillumeny and philately with science.

His older sister, Vesselina Breskovska, was professor of mineralogy, dean and vice rector at Sofia University.

He was survived by his wife of 42 years and fellow paleontologist, Nona Motekova,[5] a son and a daughter, a granddaughter and a grandson, and a siamese cat.