NGC slab numbers (i.e. certification numbers) have a 6- to 8-digit number followed by a dash followed by a 3-digit suffix. The suffix is the total number of coins on the invoice for the order which included the coin of interest. This is usually the number of coins submitted on one form, but sometimes some coins listed on a form are not invoiced for various reasons. For example, the cert. no. 2000330-034, which is a 1939 British proof ½ sovereign, would have had 34 coins on the invoice. This is one of the highest suffixes I’ve seen. I’ve never seen one over 099 but am sure they exist. 999 is the biggest possible. What’s the highest you’ve seen? Please show a pic or give the whole cert. no. so it can be verified. Cal

I'm going to venture a guess that's from a submission of a monster box of ASE's and NGC was instructed not to slab below a certain grade. Hence only 461 out of a possible 500.

Hah, look at these 3, -013, -011, and -008. Isn't it cost prohibitive to submit so few? I've never submitted to them, but that's what it seems to me.

13 is what you know was the minimum number of coins on the submission, what you don't know was the total number on the submission.

Silver Eagles or other common bullion coins submitted in bulk will have some of the largest last 3 digits. I had one Eagle in the "1xx" range (no longer own it) and I recall seeing something in the "3xx" but currently don't have anything particularly large.

I think you're missing what they were asking for. The -xxx last three is what they were curious about. That -001 is the lowest possible on a submission

I'm pretty sure the three digit suffix (the -xxx) represents that this coin is #xxx of a submission with a total of 'yyy', and that the suffix is not the total number of coins on the submission, except for the last coin. I have a couple of slabs that are consecutive, ie; 12345678-022 and 12345678-023, much like the coins @MIGuy posted. I also *think* the first set of numbers is related to the submission number, so in the above post, '4837694' relates to the order/submission number, and the -008, -011, -013 were the line numbers on the submission form. PCGS's label lists the coin catalog number, grade, followed by a unique number for that specific coin. So all MS-64 1888-S Morgans will have the first number of 7186, followed by a period, then the number 64, followed by a '/' and then the unique identifying number for that specific coin. NGC does not use the PCGS cataloging system (or number), so the first number is irrelevant to the coin intself.

Well, I didn't look at every coin in my collection, but I perused my war nickel files and found a 112. But you can say goodbye to it because I just submitted it to NGC for regrade last week.

Yup, you're completely right about the suffix representing the rank of the coin on the invoice. So, in my OP, 034 would be the minimum number of coins on the invoice ... maximum could have been much larger. Cal