Blue plastic filter in a blue leather, metal bound, case. Printed in gold coloured letters on the side of the case "WITH COMPLIMENTS FROM/ JOHN G. STEIN & Co LTD./ SILICA & FIREBRICK MANUFACTURERS,/ BONNYBRIDGE, SCOTLAND." These were given to people visiting Steins and were used to look into the furnace through so that the light would not damage their eyes. They also came in glasses shape.
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Dimensions:0 - Whole:H 6cm (H 2 3/8")