Three Sunderland lustre frog mugs and a lidded pot, printed with scenes of the Iron Bridge, a naval crest and 'Sailors return' mid 19th century, (5) The tallest mug measures 12cm high Condition report: The tall mug has staining, hairlines to the rim and a foot chip, the shorter mug printed with the Iron Bridge has a hairline around the base of the handle, the lidded pot has body cracks and a section of the flange lacking.