Riverside Stamps

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Suspect Scott #349 Unused MNH Guideline Pair.

This analysis was for a client. This is a pricey pair if real cataloguing for $575. This coil is often faked and can be manufactured from the following stock: adding fake perforations to a trimmed imperforate #344, adding fake perforations to the imperforate vertical coil #344V, trimming the perforations off the left and/or right of a perforated #332 and trimming the perforations from the left or right of the #332a booklet stamps.

The watermark is double line, normal and reads horizontal which eliminate the possibility of the suspect being a booklet pair which would have a watermark that reads vertical.


The suspect’s perforations were overlaid on an Instanta gauge.

As can be seen the top and bottom perfs gauge out to 12.0 and 12.01, only the center perfs gauge anywhere near the correct 11.93. The center perfs do not show the hallmarks of genuine perforations – slightly flattened and distorted fibers on one side of all the perf holes on the contrary they are too round and too clean. The top and bottom perforations almost look conical in shape. The images below illustrate the point.

The following images are close-up shots of the center, top and bottom perforations.



Conclusion: In my opinion the suspect is an imperforate pair of #344 with fake perfs added.

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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