This is a vintage, 2nd quarter 20th century, English Bone China green glazed and gilt luncheon set that was produced by Royal Stafford and designed by Thomas Poole. The numbers 4585 are the pattern 'name' for this set. Although the gold is real, there is no longer a precious metal meltdown value as the cost to extract the gold would exceed the value of the amount extracted. The fine china for dining market is currently slumped. Sets do not sell for what they used to sell for a few decades ago and the market was further impacted by the Recession. The estimate is for the set altogether and is based on actual recent past recorded auction sales of comparables. Retail 'asking prices' can be higher and vary.