Rare early Hubert Humphrey space pen by Fisher. Still works after 55 years!

This pen is an amazing survivor from the earliest days of the space pen. As near as I can tell this pen with Hubert Humphrey’s name on it would have been either from his time as VP which ended I969 or possibly when he ran for senator again in 1971, though it appears the artwork would have changed by then. While it still works the ink is t as reliable as new. But how many pens do you know that work after 1/2 a century. Always happy to answer questions. Feel free to make offers. Cheers!