I got this 10 coins for $20 (overpayed probably)... I know that's a bad grading company this "INB" but I was wondering what is your opinion about ... any of these coins worth "stabbing" with a respectable grading company like NGC, PSGC, ANACS? I'm well aware that probably I'm not gonna get the same grading...
The odds of any of these coins crossing over to a reputable TPG are very, very low. The only one that I might even consider trying would be the '55. Can you post better pictures of that one, both front and back?
Hard to tell from your photo, but could that possibly be a "Type 2" S mint mark on the 1981 S Washington??? Semper Fidelis
I think at $2 a pop you did ok. Keep them in their current slabs and enjoy them this way! The ‘55 would have to grade 67 just the break even. It’s got too much going on to get there IMO. Nice purchase though!
Good advice from all in here so far. Nice coins to be sure but leave them in their current slabs as all you're going to end up doing is sinking more money in for no gain.