If any Numbers OR Letters are 

stamped on the back of the badge, 

it will be listed below.

Quality - British Made Hard Enamel, 

Metal Badge with Cord,"

"CARTIER INTERNATIONAL DUBAI POLO CHALLENGE 

11th EDITION 2015", 

size 37mm, enamelled on gilt,

Makers Name Stamped on the back:-

W.O. LEWIS B'HAM.

see picture. 

please see my other ebay items.