Antique Advertising Paperweight, Clear Glass with Manganese Green Glow under UV 365, Early 20th Century, North-Western Co-operative Cold Storage

A rectangular moulded glass advertising paperweight of industrial interest, dating from the late 19th to early 20th century. The piece is fashioned from clear glass containing Manganese, which exhibits a characteristic bright green fluorescence under ultraviolet light. The face features acid-etched lettering with white pigment infill, reading: THE NORTH-WESTERN CO-OPERATIVE COLD STORAGE COMPANY LIMITED. The form is rectangular with rounded corners and a slightly recessed underside. This item represents a functional piece of commercial ephemera from the British co-operative movement or associated cold storage industry. Quantity: 1. Dimensions: Unavailable.