Detail

Data Source Information

Library:

The Royal Philatelic Society London

Source Ref:

3727

Dataset:

RPSL_MUS

Date Loaded:

12 Mar 2024 11:05:40

Item Information

Record Type:

Museum Objects

Source Record Type:

SET

Series Title:

The Museum of Philatelic History at the Royal Philatelic Society London

Item Title:

Watermark detector. Electric watermark detector in box with lens and plastic colour filters. I. Detector brown wood box with a slanted top side. Top: rotating knob in centre, viewfinder (drilled hole through the wood with plastic underneath) diagonal top right of the knob, scale described on white plastic to the left of the knob. Bare base. Front side: diamond-shaped stamped logo reading 'THE "Philatector"' centrally, 'H. & A. WALLACE LONDON' above, and 'PATENT APPLIED FOR' below. Left side has

Item Sub Title:

Who Name:

H. & A. Wallace (Philatelists) Ltd (manufacturer)

Date:

1900 to 1999

Number:

Item Associated Documents

Image 02
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Part Information

Part Type:

Object Part

Group Description:

Title:

Watermark detector. Electric watermark detector in box with lens and plastic colour filters. Three coloured plastic filters, one green, one blue, one red, wrapped in tissue paper and inserted into the 'Slide and Supplementary Colour Filters' envelope.

Key Words:

United Kingdom

Description:

Author:

Page Nos List:

Language:

ENG

Number of Pages:

Who

H. & A. Wallace (Philatelists) Ltd

Manufacturer

Part Notes

RPSL AdLib Reference
	watermark detector 2013.118.3

Associated Documents

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