One Dollar Death

Description for ONE DOLLAR DEATH by Richard Barth:

The mysterious murder of an elderly widow and a missing rare coin draw septuagenarian Margaret Binton into her third adventure as amateur sleuth on Manhattan's Upper West Side. This time the wily widow centers the fashionable world of numismatics. With the help of the colorful group of friends and neighbors, who have abetted her other investigations--Rose. the bag lady: Sid, the racetrack dandy: Jerry, the precocious pool-hall hustler; and the long suffering Lieutenant Morley and Sergeant Schaeffer of the Eighty-first Precinct--she sets out to trap the man who stabbed a friend of hers at Sotheby's, where she had gone to have a coin appraised. In the process she is nearly murdered herself and , moreover, becomes a prime suspect in the crime she's determined to solve.

This is #3 in A Margaret Binton Mystery.