Jon Martin Rising Card “Machine”.

Jon Martin Rising Card “Machine”. London: Jon Martin, ca. 1940. Selected cards rise from a pack isolated in a clear tumbler. With tension plate, key, and mechanical pack. Time delay feature allows for a pause of several seconds between the rising of each card. Pack 2 ¼ x 3 ½ x 5/8”. Hallmarked. Rubber wheels dried, extremities show wear, otherwise good working condition.