A fine study. Nice perspective. But, whoever sold these to you on the basis that they are twins was selling you a real load of.... I mean, I study the photos and these are not twins. A nice pair or couple, yes. But, not twins.
yeah one of them is taller and has a few things different, there not my chairs tho its actually a pic a took at a museum. Just liked how these were the only to chairs in the room. I also forgot to add a question mark to my title but good observation.