Water Mark Detector

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.