3¢ Flat Plate Type I
3¢ Washington Head
Flat Plate
Perf 11
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
