Most of the works were acquired or commissioned over a period of 450 years and remained at Ombersley Court until the sale of the Worcestershire house in 2017.
Among the more than 200 items are two late 16th/early 17th century close helmets, English or Flemish. Each has an estimate of £5000-8000.
They are fitted with a crimson and gilt wood griffin sergeant armorial crest for the Sandys family, from a funerary achievement.