Yes, I see that stuff often, last valve would definitely be replaced, 2nd picture looks like someone got a little aggressive while trying to tip the stem, twice ?? 1st pic factory rockers are pretty much not close very often.
I would definitely take them to a trusted shop & have the give you a honest assessment of the heads, I don't know the history of course, but you maybe looking at guides, valve job & surfacing. While you're at it have the guide height cut down for seals and put stainless valves in, but then your money would be better spent on stealth heads. Just my 2 cents.
