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BOA Membership Certificate (Dioptric Grade)
ARCHIVAL ITEMS
certificate
British Optical Association
Europe: United Kingdom, England, London
1899-07-20
paper; card; wood; glass
overall: 636 mm x 528 mm x 25 mm

BOA Membership Certificate made out to Henry Blackham having satisfied the examiners in his knowledge of optical materials and the subjective methods of sight-testing, declaring membership of the Association and entitling him to the use of the affix DBOA. Red seal. Signatures of John Browning (President) and Robert Sutcliffe (Honorary Secretary). Together with a non acid-free cardboard mount and glazed dark wooden frame with gilded inner border.


2016.335

Gift of Mr Tony Blackham FCOptom, 2016



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