Advertisement for Kimball's anti-rheumatic ring

Using this card, customers could buy an anti-rheumatic ring from FW Kimball (of 84 Oxford Street, London) by mail order. It has nine circular holes in it that relate the cross-sectional size of fingers to numbered ring sizes. To order a ring you simply sent off your money, quoting a number from the hole in the card that fitted the finger on which you wanted to wear the ring, and Kimball's would send you one by return of post. It is printed in black on white card featuring the trademark symbol of a hand wearing a ring on the little finger.
Kimball claimed in other literature that wearing the (probably copper) ring would cause a 'speedy and permanent cure for rheumatism, neuralgia, lumbago, sciatica, gout and all other diseases where a general warming, quickening, strengthening and equalization of the circulation are required.' Copper is still believed to have a 'positive influence on blood circulation and metabolism…detoxifying the body' and to relieve rheumatic conditions.