3¢ Flat Plate Type I
3¢ Flat Plate Type II
Type Check : The flat plate perf 11 stamp can be either of two types, type I or type II. Neither stamp is watermarked.
Watermark | Type | Number |
none | I | 501 |
none | II | 502 |
See Also: Identification guide for types of the flat plate 3¢ Washington