I bought a 25th ASE set from the mint to send to NGC for blind-luck grading and I had to use my 5 free NGC grades, so I sent in some older coins too. Lose some: 1) 1793 large cent came back as not suitable for grading due to edge damage (as if someone trimmed a little copper around the edge). Was only going to come back as a fair coin anyway, but wanted it slabbed as a details coin. 2) 1917 Ty 1 SLQ cracked out of an old ANACS slab (AU58) because I thought it had a shot at 60. Came back as AU Details reverse cleaned. 3) 1871 50c that was either very prooflike or proof (but scratched up) came back as AU details scratched (not proof). Win some: 1) Two early Jefferson proofs came back at 66 2) ASE Set was a full set of 70s. Not sure if consecutive numbers add any premium or not, but was just hoping to catch a 70 on one of the two new coins. All in all - I knew two of the losses were problem coins, so I'd have to say I won on this round. After a couple of of rounds of losses at NGC, happy to feel good about one..
As far as consecutive numbers on grade for a set, no premium. From what I've heard talking to dealers who've sent in the 25th Anniversary sets, the entire set as a whole will get one grade, not each coin in the set. You took the risk and it paid off for you coming back with a 70 on the label. The Jefferson proofs, are fairly common in 66 grade. Sounds like you did good on the submission.
