marine grade starter

If it works, you sell it for reuse by someone. you will need to hook some voltage to tht bad boy and see if it turns. There should be a plate on it saying input voltage, rpms, etc.

i'd think it's too beat up for resale... no visible plate, junky looking.... some corroded parts, exposed chewed up copper wire... feeling like i'll be lucky to get $2... fine by me anyway of course

All "marine grade" really means is that its spark-proof (wont light fires because they have such bad consequences at sea). If its wiring is exposed it's probably no longer spark-proof.