Encore Polikarpov I-15 and Yak 9DD/T/K

I have both these kits in 1/72, a scale I almost never work in. Like my ProModeler 1/48 A-4F, I tacked them on to the end of a Squadron order because I couldn’t pass up the 1.99 sale price. Having finally examined the kits after they lay around the workshop for months, I see they are really nice, finely detailed, though tiny, kits. (The Yak even comes with two complete fuselages). They are in black-and-white boxes bearing Encore and Squadron logos. I’m sure I’ll never build them, but I’m surious about their original manufacturer, and if anyone has ever built either of these little gems? I’d be happy to trade them both for a nice PE fret or a beat-up D&S book someone no longer wanted, or similar. (Sorry, I don’t think we are supposed to be wheeling and dealing on this site.)[}:)]