There are at least two Antoni Prusaczyks:

Source: Social Security Death Index:

Name: Antoni Prusaczyk
State of Issue: Ohio
Date of Birth: Sunday February 02, 1902
Date of Death: Monday January 07, 1991
Est. Age at Death: 88 years, 11 months, 5 days

Name: Antoni Prusaczyk
State of Issue: Connecticut
Date of Birth: Thursday November 29, 1894
Date of Death: June 1964
Est. Age at Death: 69 years, 6 months
Last known residence:
State: Connecticut