Riverside Stamps

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Suspect Scott #348, Unused HH Single (3/3/16).

This is a moderately priced stamp with a catalogue value of $35.00. This coil is often faked and can be manufactured from the following stock: adding fake perforations to a trimmed imperforate #343, adding fake perforations to the imperforate vertical coil #343V, trimming the perforations off the left and/or right of a perforated #331 and trimming the perforations from the left or right of the #331a booklet stamps.

A check of the watermark shows a double line “S”, normal orientation, at the top.

The width of the suspect is 20.825mm at the top and 20.825mm at the bottom. There are indications of perforation remains on either cut edge.

The perforations gauge out to 11.995 at the top and 12.01 at the bottom, the images below show the suspect’s perforations overlaid on genuine #331 perforations. The perforations show good signs of being genuine.

The left edge is rough and wavy while the right edge is straight and parallel with the frame.

Conclusion: In my opinion the suspect is a genuine#331 that had the perfs trimmed off the left and right sides.

Reference material used:

  • The Expert's Book. A practical guide to the authentication of United States stamps. By Paul W. Schmid.

As always comments and suggestions are always welcome.

To Contact Riverside

To Contact Riverside Stamps:
Mike Girard - Owner / Operator / Web Master: g1rardmn1099@comcast.net

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