PCGS No: see varieties

Mintage:
Circulation strikes: approximately 239,950
Proofs: approximately 50

Designer: Augustus Saint-Gaudens

Diameter: ±26.8 millimeters

Metal content:
Gold - 90%
Other - 10% 

Weight: ±258 grains (±16.7 grams)

Edge: see varieties

Mintmark: None (for Philadelphia) left of the arrowheads on the reverse

Images courtesy of Heritage Numismatic Auctions

Varieties:
Wire Rim, Periods around E PLURIBUS UNUM
   a. Stars on Edge 
   b. Plain Edge 
"Rolled Edge", Periods around E PLURIBUS UNUM" 
No Periods on Reverse 

Significant examples: see varieties

Recent appearances: see varieties

Sources and/or recommended reading:
"Walter Breen's Complete Encyclopedia of U.S. and Colonial Coins" by Walter Breen