Pyrex Corelle Old Town Blue Onion Covered Butter Dish This butter dish measures approximately 6 3/4" x 2 1/2" x 3" and is in great vintage condition with no chips/cracks. Pyrex Old Town Gravy Boat or Blue Onion Gravy Boat with Underplate Here is a wonderful Pyrex Glass Gravy Boat with under plate or underliner. It is in the Old Town Blue or its other name is Blue Onion ovenware glass pattern by Pyrex. This pattern was made to match the Corning Corelle line of dinnerware from the 1970s. This is oven and microwave safe, and holds 2 cups. It is nice and shiny and ready for you!