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Issue I (Eagle Stamps) — Recap of Distinctive Points

Introduction

This is another path thorough the confusing variety of markers which distinguish one forgery from another, and all forgeries from genuine stamps. Identifying In Brief:

Summary table of Eagle stamp forgery distinctions

Feature Genuine Stamps F1 F2 F3 F4 F5

Left Wing Dot Touches wing margin but not the nearby U
None
None
None
Touches the nearby U, but not the wing margin
None

Crown Two fine lines to top frame Three thick lines to top frame
Thick lines or dots almost merge into a blob
No lines to top frame
One thick line to top frame
Crown subdivided (or nearly so) by interior top and bottom lines

Lower G's (Height, Width, Opening Height) "Normal": 2.3 mm H,   1.45 mm W,   0.15 mm Opening "Fat G": 2.2 mm H,   1.5 - 1.6 mm W,   0.25 mm Open
"Pretty good G": 2.4 - 2.5 mm H,   1.45 mm W,   0.17 mm Open
"Tight-Mouth G": ≈2.35 mm H, 1.4 - 1.5 mm W, 0.1 mm Open "Wide-Mouth (& Narrow) G": 2.35 mm H, 1.25 mm W, ≈0.4 mm Open
"Ultra Wide-Mouth G": 2.4 mm H, 1.4 - 1.5 mm W, 0.6 mm Open

Lower Z's (Height, Top Line Width) "Normal": 2.2 mm H,   1.45 mm W "Short-top": 2.2 mm H, 1.25 mm W "Slightly Short-top": ≈2.3 mm H,  ≈1.3 mm W (see note 2 below.) "Normal": ≈2.2 mm H, 1.5 mm W (see note 3 below.) "Near Normal": 2.3 mm H,   1.4 mm W
"Half-top" (or at least "very-short-top") = 2.1 - 2.2 mm H, 1.1 mm W

Notes:

  1. If you look at a scan of a genuine first issue (Eagle) stamp, (e.g., here) you can see that the top Grozse is quite different from the lower one, especially the G's & R's. I haven't figured out what to do with that fact, which is why it is buried here instead of being more prominently displayed somewhere else.
  2. In F2 forgeries, the top bar of the Z in Grosze appears to slope down very slightly (about 0.05 mm) from left to right. It's barely noticeable except under magnification.
  3. In F3's, the bottom bar of the Z slopes down about 0.12 mm from left to right. This is quite noticeable.



Read how to classify (type) #1 (2 gr.) or #2 (4 gr.) genuine Eagle stamps.

See full pictures of genuine and forged stamps next to each other.

Review of forgery literature and introduction of F5 forgeries.
Last modified 24 Feb. 2013