3c Perf 10 Coil Washington Postage Stamps

3¢ Washington Head Perf 10 Coils

US 445 - 3¢ Washington Perf 10 Flat Plate Coil - Siegel 941 US 489 - 3¢ Washington Perf 10 Rotary Vertical Coil US 493 - 3¢ Washington Perf 10 Rotary Horizontal Coil - Type I US 494 - 3¢ Washington Perf 10 Rotary Horizontal Coil - Type II
Perf 10 Flat Plate Coil
Siegel 941*
Perf 10 Rotary
Vertical Coil
Perf 10 Rotary
Horizontal Coil – Type I
Perf 10 Rotary
Horizontal Coil – Type II – Joint Line Pair

Watermark and Type Check – The perf 10 flat plate coil, if genuine, can be only the type I US 445. The only vertical 3¢ coil is the US 489 and it is rotary and type I. The only type II 3¢ coil is US 494. Thus, only the type I rotary horizontal coils need to be checked for watermark and type.

Coil Type Printing Method Watermark Type US Number
perf 10 vertically Flat Plate single-line I 445
perf 10 vertically Rotary Press single-line I 456
perf 10 horizontally Rotary Press none I 489
perf 10 vertically Rotary Press none I 493
perf 10 vertically Rotary Press none II 494

Caution:

The flat plate type I perf 10 coil, US445, is sometimes faked by cutting off the perforations on the 3¢ perf 10 sheet stamp. The fakes usually measure smaller than the desired 25mm tall and are therefore not very convincing. Taller fakes can also be made from the imperforate type I stamp, US483. Although the 483 is unwatermarked, it may pass detection if the watermark is not checked. Be aware that fake watermarks do exist on this stamp. Better centered copies and line pairs are particularly suspect. In all cases make sure the flat plate coil has a single-line watermark.

*The US445 illustrated is courtesy of the Robert A. Siegel Auciton Galleries, Inc. and is from sale #941, The John F. Odeneal Collection of Superb Mint U.S. Stamps, October 3, 2007.

Sidebar