Likely all of them can be salvaged......It looks like most are in good shape, and some,...never used.
A couple are a bit hard to see, so, absolute identification is difficult,.....however, The yellow ones are K&b 36d's......The Orange ones are Classic 36D's, The silver gray ones are Champion 36D's,
the chrome ones are Cox 16D's...the purple/blue 26D is a Dynamic, and the 2 smaller 16D's are Dynamic or possibly AMT.
Nice collection,...and let me know if you are willing to part with one of the Orange "Classic" 36D's
Cheers
Chris Walker