Where can I watch Pennies from Heaven in United States?

Pennies From Heaven is a 1978 BBC television drama serial written by Dennis Potter. The title is taken from a song of the same name written by Johnny Burke and Arthur Johnston. It was one of several Potter serials to mix the reality of the drama with a dark fantasy content, and the earliest of his works where the characters burst into miming to popular 1930s songs. During the Great Depression, a sheet music salesman seeks to escape his dreary life through popular music and a love affair with an innocent schoolteacher.