198? Lincoln Memorial 198? Washington Quarter 1990 Washington Quarter. Need Insight If Possible.

Hey Guys!! Hoe everyone is doing well! Have a few coins that I've run across these past few months and am gradually posting for opinions to not only better educate myself, bit also to widen my perspective to better be able to perceive through different points of view that I previously hadn't thought of..that being said..I have these 3 coins and don't specifically know what to label them or "look at them as" categorically speaking..although I have an idea..but too much room for error as far as mislabeleling for future discretion..and that would only be valid if in fact these are genuine mint errors or post mint damage caused by the owners that be, or the lackluster demographic of ppl whom need a hobby:)
The 3 coins are as follows:
1) 198?)Washington quarter error.. gonna go with P for M/M guess? Just becayse it looks like a Philly strike..and Philly Finesse lol. 5.5gr
2) 198? d (possibly 83 and up) Lincoln Memorial given the weight in grams is 2.51gr I was really hoping it was a small date 82 copper:)
3) 1990 ? no mint mark Washington quarter I'm assuming that the missing lettering "IN - T in trust" was due to some sort of polishing or Struck Through Grease perhaps? Which probably decided the fate of the Mint Mark as well? 5.66gr
Anyhow, those are the 3 I'm submitting for scrutiny if anyone has some ideas, opinions and some time..I'd certainly appreciate any and all..thankbyou again!
P.s.sorry about the photos I'm still working on my less than Parker photo skills..I'm sure in time they'll improve.