Danish frits henningsen ch 18a high back chair in oak by carl hansen & son, 1960s the ch 18a high back windsor chair in oak was designed by frits henningsen and made by carl hansen & søn. The chair features very skilled craftmanship by the cabinetmakers with a semicircular back supported by upright rods, the ch1 8a is clearly inspired by the classic design of the windsor chair. It is made in solid oak with its straight grain and uneven texture. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution