To do an Internet search for eBay completed sales, etc., look for "lever Sjogren 5C chuck D mount." The lever type of chuck was not popular and the 5C collet size was not popular, so there may not be much to find. As always, value is what a buyer would pay, and that type of chuck may not get much interest from buyers. It does not matter much that they were very expensive new if there is no demand.
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