What factors raise the price of Coalport porcelain?

Collectors tend to pay more for rarity, high-quality painting, clean gilding, and forms that survive poorly, such as pierced baskets and applied-flower wares. Early unmarked pieces with secure provenance can generate a strong interest, since provenance is harder and supply is thinner. Museum type decoration linked with top painters can raise demand. Complete services with matched marks and consistent wear usually outperform “married” sets assembled from different eras. Condition still remains the main thing, as a hairline crack on a cup rim or a hidden chip under a foot can drop price far more than many buyers expect. Documented history and original purchase receipts can help, especially for presentation pieces.