I only used one cup. One cup has a dent on the underside. See image 4. On two saucers, there are areas that look like dried, transparent glue when held up to the light, but I couldn't photograph them very well. They don't come off even when wiped with a disinfectant wipe. They may have been there since manufacturing. See images 5 and 6. They are on the underside, so they are not visible when in use, but please consider this if you are concerned. I am also listing other items from the Royal Blue series.