Those pictures (and logo) are identical to the one I had in mind that I've seen before... as you say, no internal wire forestay.
Here's a link -http://rigrite.com/furling/stearn/stearn.html
EDIT: the link isn't pasting in clean - but that's the correct URL - I think the product highlighting on "Furling" is messing things up.
I think it's a Stearns Twin-Stay ONE, probably the first twin groove foil produced. Check the link, there's a cross sectional drawing and description a little ways down the page. The site says that parts are still available.
However with its forward facing groove that's a difficult foil to use compared to newer versions. I'd replace your forestay with wire and get a Tuff Luff or similar foil to install over it. This would be a far more conventional setup today.
Shipping such a long piece (unlike new foils which either roll up or come in sections) would add significantly to the cost.
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"
Last edited by Faster; 10-19-2008 at 11:49 AM.