Vintage OTAGIRI Tea Set TEA POT & (4) Tea Cups

Vintage TEA SET Tea Pot with (4) Cups Otagiri 1 Set Back stamp: Japan Design copyrighted Gibson Greeting Cards, Inc. One chip on the interior lip that the lid sits on. Not visible when is use. Can be seen in photo of interior tea pot. No other chips, cracks or repairs One cup has a light ring around the bottom interior of cup. Please see photos. There is what looks to be a hard water scale build up on interior circumference at bottom of tea pot. About 1 1/2" around. No other Stain