1973

The 1973 Philadelphia quarter was struck to 346,924,000 pieces, the heaviest Philadelphia mintage of the pre-Bicentennial clad run and a figure that exceeds the Denver output for the year. Philadelphia quarters of the date carry no mintmark, consistent with every Philadelphia Washington through 1979; the P mintmark did not appear on quarters until 1980. The cupronickel clad composition is by 1973 the only quarter format in circulation, with the three-layer planchet of 75-percent copper and 25-percent nickel skins bonded to a pure-copper core. The reddish copper line at the edge separates the coin from any pre-1965 silver issue, and the 5.67-gram weight settles any composition question against the 6.25-gram silver standard.

Strike quality on the issue is fair to good across the date but rarely sharp. Look for full hair detail above Washington's ear and crisp feather definition on the eagle's breast as the principal markers of a full strike, since softness at those zones is the routine outcome for clad-era Philadelphia production. The eagle's tail feathers and the arrows below the bird are the secondary check: full strikes show crisp definition there, soft strikes leave fuzz. No major doubled-die obverses or repunched-date varieties for the 1973 have been formally attributed by PCGS, the Professional Coin Grading Service, or NGC, the Numismatic Guaranty Company. Counterfeit pressure is essentially nil because trading values stay at face value through MS64. The relevant authentication note is the opposite: any 1973 quarter struck on a leftover off-metal or foreign planchet would be a meaningful error worth multiple hundreds of dollars when authenticated, and such pieces do surface from the clad-transition years.

The 1973 is a deep common-date in the modern catalog and the site classifies it Regular. Acquisition at MS64 or MS65 is essentially free with any roll purchase, and certified MS66 examples remain inexpensive. The condition story shifts at MS67, where strike softness and bag-mark accumulation thin the population enough to support meaningful registry-set premiums. Original 1973 mint sets are the practical hunting ground for upgrade material, since bulk-stored examples occasionally deliver the luster preservation that circulating strikes almost never produce after fifty years of bag handling. For the broader story of John Flanagan's design, the 1976 Bicentennial reverse, and the series' production arc, see the Washington Quarter series history.