Type E.1 EPNS wire frames with circular clear lenses, wrap around side-arms and leather side-shields. These come with the original Air Ministry marked tin of issue which has a 'Working Pattern' (Sealed pattern) label and lead seal attached. The label reads 'Spectacles, Anti-Glare Type E1 Fitted With Calorex Or Infrex Glasses, With Case'. The label is dated August 1941 but also has a much later 1958 inspection stamp. Excellent condition although the twine fastening the glasses to the case has severed. Rare to find these as a 'Working Pattern'. These were used as patterns to which all the 'issue' pairs should be made. Stock code G14809.