Physical description: trapezoidal with top edge narrowing to 20.7 cm; right edge narrowing to16.8 cm; top right and bottom left corners clipped
Inscription: pencil b verso
Watermark: Joseph Burch London
Provenance: Victoria & Albert Museum, 2017 National Science and Media Museum, 2003 to 2017 Royal Photographic Society, number 025088 Royal Photographic Society, old number 92