URL details: www.hobbizine.com/page0023.html
URL title:
Finding Watermarks on Stamps
URL description:
Stamp collectors use watermarks to help indentify stamps that appear similar but were actually part of different production runs. However, for both the new and the experienced philatelist making a positive watermark ID can be quite the challenge. This overview of techniques and equipment is just what the stamp doctor ordered to help you find those ellusive markings.
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