threepenny vs twopenny

threepenny

adj

  • Having a value or cost of threepence. 

  • Of little worth; mean; vulgar. 

noun

  • A stamp worth three pence. 

twopenny

adj

  • Having a value or cost of twopence. 

  • Cheap; worthless; petty. 

How often have the words threepenny and twopenny occurred in a corpus of books? (source: Google Ngram Viewer )