Machin Dummy Books
This exhibit comprises Machin dummy books and, by including the equivalent issued items, demonstrates why they were produced.
The dummies exist for the purpose of:
- Testing new or modified vending machines.
- Assessment of revised or new book formats.
- Perfecting stamp book production methods.
- Training of postal engineers and other staff.
- Prevention of theft at retailers' point of sale.
- Promotion by security printers and sponsors.
This display is the result of much original published research and discovery by the exhibitor.