Rare Slingerland 14 * 7 Super Radio King Snare Drum

I do not know much about drums. I was told that this is a Super Radio King because of the Slingerland Made in Chicago Badge, Clamshell adjustable butt end and the Maple drum. The throwoff is not the original clamshell. New holes were drilled for the replacement throwoff. The original holes for the clamshell are show in the photos. Please let me know if you have anymore information about the drum. I am starting out with a high Buy It Now Price. Please don't be afraid to tell me what it is worth or how much you are willing to pay for it.

Thank you for looking