This is essentially the white R-73 mug but is not stamped R-73 - the only stamps are "Orchids of Hawaii" and "Japan". 6" tall 2.25 diameter

*NOTE: This template already exists at https://mytiki.life/tiki-mugs/orchids-of-hawaii-r-73a

As noted, this design has multiple stampings from the same company. It is still the same design, however.