Suspect Scott #347
This is a moderately valued stamp - $37.50 catalog value and is
is not highlighted in the Experts Book as a candidate for being faked
though was flagged at the no longer active www.1847USA.com did
caution that the #347 may be faked by trimming the perforations off of
The defining feature of a Scott #347 is that it is a
double line watermarked stamp. Dipping the suspect stamp in watermark
fluid or viewing in my Safe Signoscope watermark detector shows what
may be a single line "U" watermark - see the images below.
Safe Signoscope view - barely visible single line "U" in
bottom right corner.
Suspect in watermark detection fluid.
Watermark fluid view enhanced with decreased brightness and increased
In conclusion: because the watermark is single line
the suspect has to be either a Scott #378 or a Scott #428 with
perforations trimmed off on four sides.
Reference material used:
- The Expert's Book. A practical guide to the
authentication of United States stamps. By Paul W. Schmid.
- How to Detect Damaged, Altered and Repaired Stamps. By Paul Schmid
As always comments and suggestions are always welcome.
To Contact Riverside
To Contact Riverside Stamps:
Mike Girard - Owner / Operator / Web Master:
I am a member of the American Philatelic Society
APS #: 205494
Visit the American Philatelic Society
Website at www.stamps.org
I am a member of the United States Stamp Society
USSS #: 16733
Visit the United States Stamp Society
I am a member of the Internet Philatelic Dealers Association
IPDA #: 231
Visit the Internet Philatelic Dealers Association
Website at http://ipdastamp.org