Nice pump!! It looks to be in overall good condition.. the skins & the top for the glass cylinder. I'd spray it down with some simple green, non diluted... let it sit for and soak for a good ten minutes, maybe even give it a spray here and there after the initial coat. Since your not looking to scrape anything off, use a sturdy cotton washcloth... wipe it down... rinse. & repeat if you think it's needed. I'd let it dry then hit the whole thing once with W-D 40, wipe it dry again and leave it. It should get rid of all the grease & give you a little color back with a nice patina. Good luck in search for the replacement cylinder... u should put up post in the wanted section, you never know
