Vintage Refrigerator Dish

With Lid

Pyrex

Model 501

Circa 1950's - See Notes Below

With Time Appropriate Lid

(Clear Section Down Middle)

Red

Great For Leftovers

Clean Condition

Does Show Some Wear

No Chips or Cracks in Base

2 Chips on Lid Inside Rim

Holds 1 Pint

Measures 4.25" x 3.25" x 3.25"

Estate Find

Thank You For Looking

So I Am Certainly No Expert

But My Research Has Shown

That The Original 1940's Pyrex Pieces

Had No Numbering And No

Pint or Quart Size Designations

The 1950's Pieces

Had Number / Size Designations

But No Pint or Quart Designations

The 1960's - Early 1970's Pieces

Have Both Numbers/Size Designations

And Pint and Quart Designations

Around 1975, The Pieces Started 

To Have Metric Designations

I Hope This Information Assist 

You In Your Collecting Endeavors