Described as a building full of clues and symbolism created by its architects John Seely and Paul Paget, Eltham Palace was designed in 1933 for the vastly rich art collectors Virginia and Stephen Courtauld of textiles fame.
The Art Deco house in south-east London is attached to the remains of the medieval palace.
In its Great Hall with its stained glass windows, and in an outside marquee, 25 well-known Deco dealers will be standing at the next biannual Art Deco Fair on Saturday and Sunday, May 13-14.