Is there a "standard" for low/high Serial Numbers?

I was just curious if there is any sort of official "standard" cutoff number for when a serial number is considered "low" or "high"?

Do the grading companies have a set standard SN minimum or maximum to check the serial numbers against? Is there an official definition of "low" and "high" when it comes to numismatics and serial numbers?

Is it strictly based on how many leading 0's or 9's are in the SN?

So for low serial numbers:
3 leading zeros = 99,999 bills. That's a lot. Probably not "low"?
4 leading zeros = 9,999 bills. Better.
5 leading zeros = 999 bills. Definitely low?

Same idea for high serial numbers. How many leading nines until it's considered a high SN?

OR, is "low" and "high" based on some other criteria? Like the serial number's ratio to the total number of bills produced or something?

I've tried Googling grading standards for low/high serial numbers, but without any luck.

Thanks for any help.

 

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Ideally you want bills from 1-100 or from 900-999 on the high end (although sometimes the series doesn't print that high.) But I believe the low ones can also be a small premium under 1000.
Take a look: http://coolserialnumbers.com/FancySerialNumbers.aspx

 

Personally, low serial numbers are double digit <100, and high serial numbers are >999999XX. Others may have different standards, and I respect that. To my knowledge, there is no official scale.

 

Also, be aware that serialling of circulation-issue notes hasn't gone all the way up to 99999999 in over forty years. These days, most denominations end at 96000000. So you sometimes see numbers in the 95999xxx range referred to as high serials, too, since they're the highest actually printed for circulation.

 

OK, thank you all.

 

it varies to everyone. to me a serial numbers with four leading zeros are considered low to me.
like this bill:

 

It's not low, but I think the double quads (plus star) counts as fancy.
Plus it's a FRN redeemable in gold. Awesome.

 

Bought this “as is” . Cut from a sheet.

 

Wow that's nice. Rare to see a high one.
And here comes in Clarence with his high note.