not worth a tinker's damn

not worth a tinker's damn

Completely worthless or useless; having little or no value. I was so excited when my grandfather said he'd give me his car, but this old clunker isn't worth a tinker's damn. Over the years working here, I've come to realize that the boss's word isn't worth a tinker's damn.
See also: damn, not, worth
Farlex Dictionary of Idioms.
See also:
  • not worth a tinker's curse
  • not worth beans
  • not worth a continental
  • not worth a plugged nickel
  • not worth a plug nickel
  • be not worth a plug nickel
  • be not worth a brass farthing
  • not worth a brass farthing
  • clunker
  • piece of garbage