Very nice. When I was growing up, my dad played a 000 Martin, vintage unknown, that my stepmother's mom had inherited from someone. He lost the guitar when they divorced, but I had played it a lot and it was sweet.I'm not a vintage Martin expert but I do own a couple and have worked on a few more. I didn't know that Martin used Egleman for tops (Adi and Sitka for sure) and I didn't know Egleman had bear claw. You should be able to tell easily if its been retopped which then opens the question of Why? Unless its been done, I would anticipate it needing a reset frets and maybe leveling the fretboard if the relief is too bad. I don't see a pickguard crack, the original p/t should have been finished over.
Are you using the term "Player's grade" in some specific manner? I haven't heard it before. It looks to be in remarkably good shape for its age.
Attached is a 1950's (don't remember the exact year) 00-18 that crossed my workbench for a reset, some frets and cracks and my '74 D-18.
My old D18 greets your somewhat younger D18!1954 D18 Player's grade.
Engleman top?
Likely refinished.
Bridge has a few cracks.
Non original pickguard.
Looks like one original tuner.
Light as a bag of Cheetos.
Plays great with .010 string set.
Going in for inspection, bridge repair or replacement and period correct pickguard.
Oh! That explains it. Don't go higher than thirteens or you'll be flirting with a buckled top.The bridge has some cracks.I plan to go medium after repairs .