Signature & date
stamping:back:"Firmin & Son, London"
Carron Cupola; Carron Co; Carron Iron Works Stenhouse Rd Stenhousemuir, Larbert Carron Iron Works/Stenhouse Rd/Stenhousemuir/Larbert area; ironfounders; estab. 1759, closed 1983; The Magazine of Carron Company.
Vol 3.4 for a photo of a security guard in 1952.