The Corum Coin Watch was first created in 1964 and many past USA Presidents have worn them.
Corum releases 3 new
Coin Watches, and all 3 are 43mm in size.
The first Coin Watch is uses an authentic USA sterling silver dollar coin with blued hands & a sapphire set in the crown.

The 2nd Coin Watch uses a 22-carat yellow gold "Double Eagle" coin with a diamond set in the crown.
And the 3rd Coin watch is a Corum Coin Special Edition commemorating the anniversary of the creation of the State of Israel. Coin used was minted in 1973 for the 25th Anniversary of the Israeli Declaration of Independence.

Cheers,
Anthony