Brother/sister Karen and Richard Carpenter made up the most successful singing duo of the 1970’s. With over 100 million records sold, they had 10 singles that went gold. On many of their early recordings Karen also played drums. Their first single, a re-make of the Beatles’ “Ticket to Ride,” is worth no more than $15.00 but their 1969 debut album, “Offering,” released on A & M Records, is worth up to $150.00 today.