1873 Liberty Seated Half Dollar. Arrows. WB-107. Small Arrows. MS-61 (ANACS). OH. A sharply struck example toned in a blend of dusky mauve-gray and sandy-silver patina. The weight of the half dollar was modified when the Act of February 12, 1873, mandated an increase from 12.44 grams to 12.50 grams. Following the precedent set in 1853, the Mint once again added arrows to the obverse before and after the date for coins struck to the new weight standard. This type remained in production only in 1873 and 1874, after which the basic Motto type returned, albeit with the weight standard as mandated in 1873.The Arrows type of 1873 to 1874 is more challenging to locate in all grades than its predecessor of 1854 to 1855. The type as a whole is scarce to rare in all Mint State grades. From the E. Horatio Morgan Collection.