Take a look at this page: http://pioneerflightmuseum.org/news/index.shtml
Everything seems to match.
Thanks for the link – very interesting. I agree to your your opinion (which also matches the one quoted from FLUGZEUGFORUM, as you might have guessed from the photo’s file name…)
Nevertheless I would appreciate positive confirmation that Kermit Weeks had an S-4 (BEFORE relocating to Polk City, NOW one is quoted to be part of his Fantasy of Flight collection). And a serial/constructor’s number would be just great…
Regards from Germany,
Thomas