I wonder if this is what is referred to as a "Spanker" class?

Perhaps do a search on www.ilse.nl (dutch search engine). Use the key
words "Zeilen spanker klasse" and see what it coughs up is similar to
what you have.
My brother has built one recently and races it:
http://www.weidema.com/theus/ -- click on "photo galerij" to get an
idea.
It that's it, I'd be happy to translate whatever page you need to read.

If it is a spanker, It can be a very cool little boat to sail -
congratulations on your find!

Remco

Here's another site describing the class: http://www.spanker.nl/

Here's another site describing the class: http://www.spanker.nl/

dear remco,

Thanks for the tip. I did visit the pages and, while the boats are very similar
in appearance, none of the the Spankers pictured had gaff rigs and the spec
page showed a more "blade-like" fin keel than mine has. Mine is swept back,
polygonal with an airfoil leading edge and a small bulb along the bottom.

Also.most of the boats pictured are trapeze rigged, I haven't found any
evidence of that in the tangle of rigging I've got.

Anyway, I look more deeply into this since the class was started in the early
sixties and the similraities are strong.

thanks again