Sorry for the loss of your brother, I'm sure you're thinking of him this holiday season.
Looks like you've
inherited a good deal of value there, if you sell correctly, could end up with no mortgage or something like that, with no trouble at all. Your brother has left you with a true legacy, he was an astute buyer and that is something to be proud of.
Do make an inventory of each coin, including the grade if you can, just an Excel spreadsheet or something, and populate a value column during the next year. This is something you could sit on for a year and learn what you have in that time, then decide what to do with it after that.
Do go down to a coin shop and purchase a new catalog of
US coinage, one that includes the range of MS grades, and use that to assist in the valuations. Then take your list to a couple of shows, some shops, and verify prices by grade and coin from their inventory. The ungraded material, or the private slabs, you can grade yourself, or post here for some grading assistance, if you take good photos of them. Leave the coins in the private slabs, it protects them. If you have unslabbed, loose coins, you will want to get them in mylar flips or
Coin World holders, something like that.
You can get it all appraised, that will cost you some money, or some coins, but it's worth it to get some knowledge yourself.
Plan on sending some coins in to PCGS or another grading service, for professional grading. The first private slab you posted is probably not MS67, but an honest professionally graded slab is going to be worth the $30 fee. A buyer will knock down the rating to MS60 or 62, having it regarded to MS63, say, is worth doing, as grade then becomes a non-issue.