Tamworth & District Polo Cup – P.G. Smith Challenge Cup: Won by Ohio, 1929.
Two manufactured stamps: Hardy Bros. & STG.SILVER (see: jpg)
See: 1929 newspaper report; courtesy of, NLA-Trove: http://trove.nla.gov.au/ndp/del/article/16569535
11.5 cm tall (n: 4.5 inches).
Price: $550. (AUD)
Can be bought on-line. Price includes postage worldwide.