1980 National Letter Writing Week: Letters Preserve Memories 15c Se-Tenant Pair Purple and Multicolored

1980 Preserve Memories 15c
1980 Preserve Memories 15c
1980 PS (purple) 15c
1980 PS (purple) 15c

This stamp commemorates National Letter Writing Week with the thought that letters preserve memories.

The P.S. stamp forms a vertical se-tenant pair when attached below the larger stamp.

(I need to retake these pictures so the stamps are orientated correctly.)