A very rare version of the Tank chair by Miroslav Navratil, labeled on a right armrest with the letter "N" and a picture of a house ("Navratil" means "back home" in Czech). The wooden parts made of laminated bentwood are in a very good original condition. The fabric and inner filling with a spring core appears to be original, and the seat is very soft and comfortable. Can be used in its current condition. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution