unknown. apparently.
1957
R. Mark Mathews has written: 'Matching clients and services' -- subject(s): Information services, Social service
There's no "R" mint mark. The mint mark position on a Seated Liberty half should be below the eagle. If the "R" is elsewhere your coin has been altered and has lost most of its collector value. If the R is where the mint mark should be please check it with a good magnifying glass. There's more information at the Related Question.
a historical background is a background of the history in what u r looking for
Mark R. Dybul was born in 1963.
Mark R. Beissinger was born in 1954.
Mark R. Killenbeck was born in 1948.
Mark R. Kravitz was born in 1950.
Mark R. Hornak was born in 1956.
Mark R. Cohen was born in 1943.
Mark R. Bacon was born in 1852.
Mark R. Bacon died in 1941.