A 1976-S Bicentennial Quarter in silver proof condition is certainly valuable, but a price of $13,500 seems unusually high and would warrant further investigation.
While silver proof coins generally command premiums over their clad counterparts due to their silver content and the proof finish, the value can vary widely depending on factors such as the coin's condition, rarity, and demand among collectors.
The 1976-S Bicentennial Silver Proof Set, which includes the quarter along with the half dollar and dollar, is sought after by collectors due to its historical significance and silver content.
f you're considering purchasing or selling a 1976-S Bicentennial Quarter in silver proof condition for such a high price, it's crucial to verify the authenticity and quality of the coin
it's crucial to verify the authenticity and quality of the coin, as well as to consult with a reputable coin dealer or numismatic expert for a professional assessment.
Additionally, checking recent auction results or sales of similar coins can provide insight into their current market value.