I counted 73, I have no idea what these parts are for or year. I am told they are guitar parts. I ve sold numerous electrical equipment, Vacuum tubes, relays, motors and more, with no complaints from buyers. Picked up huge lot , miscellaneous hardware , tubes. Coils, transformers, motors, testers, much more. Some used some NEW, with boxes/with out boxes. I have no knowledge of how to properly use this parts ( test ), everything is sold as is.I can email additional pics to help you’re buying decision.I offer a large variety of items and I do not specialize in any one area. The majority of my items are acquired through estates, home sales, storage bins, closeouts etc.I describe them to the best of my ability and use multiple photos to help aid you in your buying decisions. If you have any questions or concerns please email prior to buying as I am not a specialty seller, and something that may seem obvious to you regarding an item may not be obvious to me. All items are as pictured. Thank you