Vintage, mid-40s dark blue, bakelite ocarina, aka: 'sweet pototata"
Has a 'C' marked on it, which might mean the key it's tuned to or the model.
Patent Number: 2,195,992 for what that's worth.
The 'sweet potato' was my Christmas present, then. I wanted it after hearing
it played on the 'Grand Old Opry' when I was around 10 years old.