I just got a 1962 seafarer meridian.
this is clearly the original philip rhodes design
this has a full keel with an attached rudder--LOA just shy of 25'
some had inboard power some had the common (in the era) o/b well
they had a wooden mast and boom---very rare!!! adds a lot of character
later the production was moved to the u.s. & the molds were modified (I believe with McCurdy & [Bodie]Rhodes)
these variation had names like meridian vineyard, meridian bermuda, etc--they were around 26' LOA
fin keel with separated rudder
I assume you read these
Seafarer Meridian
Meridian
after reading these again yours must be a fin keel
let us know
-kevin