Two Shimano Ultegra 6700 CS-6700 10 Speed Cassettes 11-28 and 12-25

The used 12-25 cassette was replaced with a larger cassette on a 2010 Cannondale Super Six Hi Mod by the previous owner. I have never used it.  The used 11-28 cassette was replaced on my 2013 Cannondale Supersix Evo. I have upgraded to 11-12 speed bicycles and have no need for these two cassettes. Both cassettes have life left on them (otherwise they would have been discarded). See photos for condition.