to me this looks like a well preserved coin for 1988 and the way the letters on the reverse see some folks are teaching that is doubling here online, they say look for that.. see the doubling on monument and letters?
All I'm seeing is machine doubling up to and regular pillars. Look at a few more memorial event . They will all look like that. Also, the coin is in okay condition for being over 30 years old. If you like it, keep it, but it has a value of one cent.
While your photography skills are getting better, they are still not clear enough to see stuff as minute as DD errors on Lincoln Cents. From your whole coin photos I will say that this is a nice circulated example of a 1988P LMC. It would make a great hole filler for a book.