Low Octave Marimba Bars - F/F#/G/G#

Four low octave marimba bars - F, F#, G, and G#. These were in a bucket of percussion instruments I purchased. They're not of much use to me. There's no indication as to brand, and I don't know enough about the subtleties between Deagans and Yamahas and Mussers to know what to even look for. My guess is if you're looking at these, you're smarter about them than me.