1919 D Quarter

IMO, unless you feel the coin is not authenic for some reason why slab it? If you want opinions about the grade you can post it here. I personally see no reason to slab coins like this. Just my opinion.

Please post images of both coins if possible. If your coins are damaged, cleaned, or otherwise have problems it might be a waste of money sending them for grading. If they look original and are undamaged I think their value justifies grading, both to confirm authenticity and to possibly improve the selling price if you choose to put them on the market sometime.

Which coin show and what grading service will be represented? If these coins are the grade that you are thinking, I would recommend PCGS for the best value. Again, prior to submission, you need to be sure there aren't any problems, but I would go with them. At this point it doesn't really matter if you're selling or not, it's more a matter of preservation in my opinion. Maybe the booth can take a cursory look for you to see if there are any problems prior to handing them over.

As a side note, even if you chose not to post pictures here, I would highly recommend taking very good pictures of the coin prior to any submission for your records. You don't need a crazy camera set up either. Get a tripod and even a 4mp camera and play with some desk lamps for a few minutes and you will probably get some pretty good shots.