Lot of Vintage 1977 OPC Star Wars Trading Cards Series 4 Orange Series

This is something that I picked up from a garage sale! I dont know much about it but its a pretty unique item! I dont know which cards are which and have already packaged them so please only purchase if you are happy to receive the cards shown in the phots :-) Conditions may vary from damaged to great; Thanks! Also to note, the one Darth vader card & cards 233, 227 unfortunately got torn up by my cat after taking the photos so unfortunately will not be included ):