An unusual compressed air operated vertical hammer in the form of a steam hammer with cylinder 1in bore x 2¼in stroke with hand lever operated valve mounted on steel side plates with a belt and flywheel driven single cylinder air compressor 1½in bore x 1½in stroke. Finished in black, green and polished brightwork, mahogany plinth -- 12 x 9½in (30.5 x 24 cm)