Wish I could help out Jack, but I just don't see many Sea's cross my 'bench. I know Dennis Bowden has a nice collection. Drop him a line & see if he's got what your looking for or knows of a source.
Dennis
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Tu ne cede malis sed contra audentior ito ~Yield not to misfortunes, but advance all the more boldly against them
You are correct. Dennis Bowden does have a magnificent collection of both the Seas and the Sheaffer Connaisseur Fountain pens. Last time I checked with him, he only had one Tasman Seas Fountain pen in his collection (his most recent find) and he had just started collecting the matching Seas Ballpoints and Rollerballs.
I already have all of the ballpoints and all but one now, rollerball, the purple transparent Adriatic.
Just scored the remaining "Seas" pens I was missing from my collection. Will post a photo of my collection of thse beauties once the pens arrive. Happy Day!