I don't think that I have seen one of these before.
The address block, visible in the window, included the correct 9-digit zip code, and one of those up'n'down barcodes you see on invoices nowadays.
The envelope was clear of visible markings, except for the YYMMDDHHSS, as shown.
I immediately read the "12271602" part of the string as 4:02 pm on 27/Dec.
The return address is NJ, the delivery address is NY, and the contents are a current invoice, so delivery in 3-4 days would make sense, except ... the string begins with "20", not "16".
Ten digits would be right for a telephone number, and 201 is an area code for NJ, but the number is reported as "not a working number".
One supposes that whatever equipment applied that code could have a cellphone for reporting its status & usage - a number that is only "in service" when the device powers it up for its own reasons - but why would it print that cellphone number on the mail it processed?
It seems unlikely that the post office would apply a date'n'time (to the second, no less) without reference to both the year & processing center.
It also seems unlikely that this will be judged the perfect cover with which to close-out the old year and bring in the new, but:
Q/ Have you seen this ten-digit postmark-zone marking on your
Q/ What did you
think you were looking at?