Trade card: Bancks, 440 Strand, London, makes and sells all sorts of mathematical, optical and philsophical instruments. On the most improved principles and lowest terms. wholesale and retail. n.d. [18--] letterpress. oval cartouche removed from lid of instrument box. trimmed to octagon 6.2x8.8cm conserved backed and edged to 9.5x12cm (Calv. 26) (C.C. 60)