Super neat piece you are unlikely to find anywhere else. The dates of the coins are:
1908 • 1910 • 1911 • 1908 • 1908
This piece is exceptionally well made and the craftsman used 14K gold (marked) for the pin parts. With a melt value of right around $1,026 (using $1605 spot) I feel like anyone could buy this piece and still turn a profit.