Dealer Option

An option created upon physical commodities, outside of regular exchange regulations.

Investopedia Says:
These options are typically written by firms such as clearing houses, which hold the physical commodities and offer them to the public.

Related Links:
An introduction to the world of options, covering everything from primary concepts to how options work and why you might use them. Options Basics Tutorial
There's one simple hurdle in the transition from stock to futures options: learning about product specifications. Becoming Fluent in Options on Futures