must-have ! Cox Windsor Airplane Competition Propeller Prop, PLEASE READ, Lot of 3

I do not know what is here but can only share what I see. There are (3) Propellers" (2) Gray (1) Black. They were in a 1977 Cox packaging that had a punctured hole so unsure if these are part of the 1977 Cox Brand. (1) Gray Propeller reads: Thimble Drome 50 3P, (1) smaller Gray Proller reads: Thimble Drome 4.5D 2P, and the (1) Black Propeller reads: Windsor Propeller 5.5 x4 5540. These are being Sold As-Is and no guarantee to its brand or whatever. Please see photos as part of the description and condition. Appears to be in Good Condition. What you see is what you will pick up exactly, nothing more nothing less. Happy to answer any questions.