Our 1962 allied seawind Hull
#7 also had the hull
number on the main sail. There was also a plaque on the bulkhead right above the steps as you went down to the cabin
I can see that you don't currently have the boat documented. Most of these were documented when they were built, so if you can still see the doc. number engraved in the bulkhead above the v-berth facing aft, you can use those to look up the records on the USCG site and may get some info from that. Or if you know the boats previous name from when it was documented.... There used to be a list I had 20 years ago with most of the names and hull numbers for all of the seawinds. I'll take a look later and see if I still have it.