I have a 1979 Chris craft Excalibur who made it or was it both Chris craft and Excalibur 31 ft 5 in on title

what are first 3 digits of HIN? you can google boat manufacturers code to get a list of all 3-digit man codes. you sure you don't mean WELLCRAFT excalibur? edit. just did a nadaguides search. wellcraft exc's were apparently cats. excalibur marine built boats from 76 or so to 85. in 79 they had a 31-OS same length-beam-listed weight as 79 chris 31-OS. both called 31-OS. probably made by excalibur-some sold by chris. just found a code site. excalibur marine was NAP. chris had 4 or 5 codes. 1 was CHR and the rest were CC-something.

No has Chris craft emblems on the side also Chris on title

My mistake just starts with NAP. But has Chris emblems on it

NAP stands for North American Products..... It's an Excalibur.....I was involved in the co.

Then why the Chris craft emblems????

They were not added later I saw original pictures????