Starship Enterprises enters into the following transactions during 2017 and 2018:

2017

Jan. 1: Purchased $100,000 face value of Northern Lights Inc. bonds at face value.

The newly issued bonds have an interest rate of 8% paid semiannually on June 30 and December 31. The bonds mature in five years.

June 30: Received interest on the Northern Lights Inc. bonds.

Dec. 31: Received interest on the Northern Lights Inc. bonds.

2018

Jan. 1: Sold the Northern Lights Inc. bonds for $102,000.

Required - Why was Starship able to sell its Northern Lights bonds for $102,000?