The BA3 (BA23) chair is a 1950s design originally built in London then the Isle of Sheppy. The factory later moved to Bourton on the water where this one was made sometime from the 90s. 
It’s a used chair with markings on the metal from and a patina looking red leather cover with old metal tacks in the back. (Also have a brown leather chair available)

Has a made in England engraving on bottom with Race furniture sticker. 
The BA3… a post-industrial look balanced by an elegant silhouette
Ernest Race’s first design for Race Furniture. Through Ernest Race and his partner Noel Jordan’s engineering skill, the BA3 became one of the world’s first mass-produced chairs. At a time of limited resources, the manufacturing process was revolutionary and used salvaged materials, including recast aluminium from redundant aircraft and upholstery from recycled RAF planes.