It certainly looks like a Wilga from your photo. A pal who buys and sells aircraft bought one and after a very quick brief found himself flying a machine with instruments calibrated in thargs per square houndstooth or somesuch. It was soon moved on and due to it's high-lift devices, was picked up and blown over in quite a light wind. Scratch one Wilga. Ther's one in the Wroughton museum and I saw one for sale at Londonderry last year.