Lot 1690 , A collection of finely executed watercolour and pencil drawings, some technical subjects to include an accelerometer and Optical Blank Shaping Machine, framed as five, largest overall 40 x 29cm

A collection of finely executed watercolour and pencil drawings, some technical subjects to include an accelerometer and Optical Blank Shaping Machine, framed as five, largest overall 40 x 29cm
£60-80

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