Riverside Stamps
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Scott #356 Coil Height Analysis.
As part of my ongoing research into the Scott #356 paste-up I have made an effort to measure the height of all the paste-ups in the census. As can be seen from the measurements in the table the 18 genuine paste-ups are, on average, very near the ideal height of 25mm. The maximum height averages 25.48mm and the minimum averages 24.6mm. Census 356PU-CAN-SNGL-19 and 356PU-UNU-PR-20, both deemed fake by the Philatelic Foundation, have heights that fall within min-max range found in the genuine paste-ups - for that reason I beleive that in both cases the PF was wrong and both paste-ups are genuine. On the other hand, census 356PU-UNU-SNGL-16 (APEX) and 356PU-UNU-PR-22 (PF) are both very short justifying the opinions of "Fake". I will counter by saying that it is known that in rare cases paste-up joints were trimmed at the time of manufacture to even out misregistered joints resulting in short measurements. Though I believe that both "Fake" paste-ups are most likely genuine I feel that there needs to be more study done on these two before final judgement can be passed.
| Opinion of Genuine | ||||||
| Census # | Left (mm) | Middle (mm) | Tab (mm) | Paste-up (mm) | Right (mm) | Certifying Authority |
| 356PU-UNU-SNGL-1 | 24.625 | 24.875 | 24.875 | Philatelic Foundation, Professional Stamp Experts | ||
| 356PU-UNU-PR-2 | 25 | 25 | 24.75 | 25 | Philatelic Foundation | |
| 356PU-UNU-PR-3 | 24.875 | 24.75 | 24.75 | 24.75 | Philatelic Foundation | |
| 356PU-UNU-PR-4 | 25.75 | 25.75 | 25.5 | 25.5 | Philatelic Foundation | |
| 356PU-UNU-STR-5 | 24.625 | 24.75 | 24.625 | 24.625 | Philatelic Foundation | |
| 356PU-UNU-PR-6 | 25.25 | 25.5 | 25.25 | 25.5 | Philatelic Foundation | |
| 356PU-CAN-SNGL-7 | 25.375 | 25.125 | 25.375 | Philatelic Foundation | ||
| 356PU-UNU-SNGL-8 | 24.5 | 24.75 | Philatelic Foundation | |||
| 356PU-UNU-SNGL-9 | 24.625 | 24.75 | 24.75 | Philatelic Foundation | ||
| 356PU-UNU-PR-10 | 24.75 | 24.75 | 24.75 | Philatelic Foundation | ||
| 356PU-CAN-SNGL-11 | 25.125 | 25.125 | 24.75 | Philatelic Foundation | ||
| 356PU-CAN-PR-12 | 24.75 | 24.625 | 24.5 | 24.625 | Philatelic Foundation | |
| 356PU-UNU-PR-13 | 24.625 | 24.625 | 24.75 | 24.75 | Philatelic Foundation | |
| 356PU-UNU-PR-14 | 24.875 | 24.75 | 24.75 | 24.875 | Professional Stamp Experts | |
| 356PU-UNU-PR-15 | 25 | 25 | 25 | 25 | American Philatelic Expertizing Service, Professional Stamp Experts | |
| 356PU-UNU-SNGL-17 | 25.375 | 25.25 | 25.375 | Professional Stamp Experts | ||
| 356PU-CAN-PR-18 | 24.875 | 25 | 25 | 25 | Philatelic Foundation | |
| 356PU-UNU-PR-21 | 24.875 | 24.875 | 24.75 | 24.875 | Philatelic Foundation | |
| Average | 24.945 | 25.042 | 24.925 | 24.992 | 24.750 | |
| Max | 25.750 | 25.750 | 25.500 | 25.500 | 24.875 | |
| Min | 24.500 | 24.750 | 24.625 | 24.500 | 24.625 | |
| Opinion of Fake | ||||||
| 356PU-UNU-SNGL-16 | 23.6 | 23.7 | 23.7 | American Philatelic Expertizing Service | ||
| 356PU-CAN-SNGL-19 | 24.5 | 25 | 24.625 | Philatelic Foundation | ||
| 356PU-UNU-PR-22 | 23.5 | 23.375 | 23.375 | 23.625 | Philatelic Foundation | |
| Mixed Opinion | ||||||
| 356PU-UNU-PR-20 | 24.875 | 24.625 | 24.625 | 24.75 | American Philatelic Expertizing Service-Genuine, Philatelic Foundation-FAKE |
As always comments and suggestions are always welcome.
To Contact Riverside Stamps:
Email:
Mike Girard - Owner / Operator / Web Master:
g1rardmn1099@comcast.net
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I am a member of the American Philatelic Society
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I am a member of the United States Stamp Society  USSS #: 16733 Visit the United States Stamp Society Website at www.usstamps.org |
I am a member of the Perfins Club
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