The copper and bronze currency used by the Turkic Sultan of Delhi (India) Muhammad-bin-Tughluq during his brief existence from 1324 to 1351 has become a collector's item today. The supply of his copper and bronze coins is perfectly inelastic. However, the demand for historical artifacts has dramatically increased recently whereas some of the old coin is destroyed or no longer of any value, what happens to the market price (analyze with a graph)?