Vintage Japanese Tea Set Tea Pot & Cups by Different Artists

This belonged to family member (hoarder) who goes to every yard and garage within a 3 state radius.My brother and I make a yearly pilgrimage to the storage unit (units) to make room in her house for the next year’s treasure.She finally let us go through some of this and we couldn’t believe what she had boxed up.There was everything from art glass and crystal to all kinds of Asian porcelain. Almost everything is marked and has value.My brother and I are now in the apprentice hoarder program and have offered to drive her around for a cut of the junk.It looks like this tea set had been boxed up for quite a while.The taller cups are really unique as the size and artwork on each one is different. There slightly different size as are the lids that will only fit the proper cup..The fish and flowers are also slightly different as is the color of the streams of water.One is much bluer. The middle cup has a brown ring around the lid that’s probably there to differentiate between the sizes.I I can’t figure out is why the 3 cups have 2 different red marks that are different from the teapot and other cups that have a dark red with gold mark.Thanks for looking.