This is an EXTREMELY RARE vintage, Showa-era glass penguin Kikkoman soy sauce bottle. I believe this dates to the 1960s or 1970s, but it could be as early as the late 1950s. I tried to find another bottle like this online but aside from some old auction listings which are behind a subscription paywall, I can only confirm that these are vintage, exceedingly rare, and seldom come up for sale.  This bottle is designed so that the soy sauce comes out of the penguin's beak when poured. Adorable.