Going back to the original CPA Firm using out of date stamps, I would suspect that the date cancel is November 17, 1998. Rationale is that the Uncle Sam 22-cent stamp was only issued November 9, 1998 and the sender handwrote the changed zip code in the return address from 021 to 024.
This keeps in line with the new Zip code regulation that occurred about that same time as quoted below:
Quote:
When the volume of mail handled by the South Station Postal Annex began to exceed its capacity in the late 1990s, the Post Office decided to transfer part of that section's work to the newer Waltham, Massachusetts, section. Since the first three digits of the Zip code are overloaded with routing information, to accomplish this change it announced that about half of the Zip codes that began with 021 would, on July 1, 1998, change to 024.
Posted 02/26/2011 1:42 pm
thanks wt1
