I recently gained possession of a small collection of $5, $10, $25, and $50 dollar American gold bullion coins. Is it a good investment, financially, to have these coins graded and slabbed. I do not have any intentions of selling them in the near future.
If they're bullion coins it really doesn't pay to have them slabbed as most have little or no numismatic value and will always be worth close to 'spot'. Save your dough and welcome to the forum.........
If you know that you are not selling them in the near future then there is little reason to slab them. By the same token, if you know that you are not dying in the near future (which might make your heirs sell in the near future) then I am interested in buying your crystal ball.
If you don't plan on selling then no, do not slab. But if any of these might come in at 70's and you do plan on selling then yes. A lot easier to get rid of as long as you can recoup your slabbing costs.
If they're proof coins, keep them with their original packaging. If they're the uncirculated ones, just keep them safe. There are a few dates that are worth multiples in MS/PR70 of what they are worth in a more pedestrian grade, but since you're not selling them, there's no real reason to spend the money at this time to have them graded.