Dog Tag Found

Many years ago my husband found a dog tag in Flint, Michigan. He came across it recently and would like to locate the owner of the tag or his family to give it to them. We have made several attempts to locate the owner/family but have been unseccessful. We are hoping with the power of the Internet we can locate this individual's family.

The name on the tag is:
Wikkiam T Jakubczak
RA 16620445
Blood Type O
Roman Catholic