HUB
Collections
Classifications
App
Water Mark Detector
Object/Artifact
-
Museum Of American Heritage
Name/Title
Water Mark Detector
Entry/Object ID
1000.219.1
Description
Detector, Water Mark
Made/Created
Manufacturer
H & A Wallace
Date made
1936
Notes
where made: London, England model name: The Philatector model number: Patent #522018 serial number: Trade mark #603312
Color
Black
General Notes
Note
For detecting watermarks on postage stamps, colored filters, to identify kind of stamp paper, helps to identify forgeries, flaws, detects repairs.