Rare Early Derby Porcelain Rectangular Butter Tub / Pot & Cover c.1758

In excellent condition. There has been a truly invisible repair at one end which cannot be explicitly identified. It cannot be seen even with an illuminated jeweller's loupe. It is only under UV light that one end panel glows a slightly paler tone and the inner lower edge glows to reveal some work has been completed. There are no signs externally of issue to be able to suggest what has actually occurred. The porcelain is sound and has not been restored. Photos of the UV results can be provided if required. The handle has been expertly repaired which can only be seen under high magnification. There are a number of historic small chips and nibbles to the edge of the flange to the inside of the cover. Very minor handling wear except to the brown enamel on the rims which has been rubbed on the corner tips of the cover and understandably more so on the rim of the tub.