museum piece vs oldie

museum piece

noun
  • A very old item, especially an obsolete piece of technology. 

oldie

noun
  • Something or someone old. 

  • The genre of music composed of popular music from previous eras. 

  • A song or record from a previous era. 

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