with your new photos I would agree with CoinHunter27 on the
DDR. nice find especially for someone not versed in collecting. however the coins grade and what appears to be a cleaning the value is not there to have it professionally graded
I'm just guessing here on value but if the coin grades VG details (cleaned) its probably a $35-40 tops. to have it graded at PCGS and authenticated for
DDR is going to exceed the value of the coin.
when you bring in bags of coins or even sets to a dealer they are not going to sit there and assess every coin. they will probably looks quickly at the sets or individual coins for keys and semi-keys and all the rest they are not really going to grade but just give you overall value that they feel they can sell them and make a profit. to get max value can take a while to assess every coin and they are not going to do that.
if you have the time and learn what you have then separate them like Freespeech57 stated. put them in a spreadsheet. I would then go to
http://www.numismedia.com/fmv/fmv.shtml and just get a feel for which ones have anything more than a nominal value. highlight those and then when you are done take those and post the better ones here to have them assessed.
there are folks on this site who probably would be interested in some if not all of your coins at probably a better price than a dealer would pay but they need to be inventoried first to know what you have