I have a ~20 year old Weller station (base: 921ZX-0, iron: 9216, tip: U9960) for which I've lost all but the 9960 tip. Searches for Weller/Ungar 9960 as a starting point for finding compatible tips have proven fruitless. 20-year-old Jensen Tools catalogs are not the sort of thing Google Books ever scanned :)
Which line of modern Weller tips would be compatible with this old beast?