This was my own set that I have had for quite a few years.
They are made by Mosser Glass. Mosser Glass is family-owned and operated in Cambridge, Ohio, with over 40 years of manufacturing quality hand-pressed glass products.
If you are familiar with Pyrex mixing bowls, these are similar (if not exactly the same shape and size) to the Pyrex 401, 402 and 403 sizes.
They are a beautiful color blue inside and out that I believe is called Georgia Blue.
They each have different striations throughout the glass hotsell that I have tried to show in close-ups.
There are no chips or cracks in any of them.
Bottoms are marked with the Mosser "M"
I have always hand-washed these, not sure if they can go into the dishwasher
I don't believe they are microwave safe.
Measurements -
Small 20 oz. bowl – Diameter: 5.75”.
Product code: Mosser Blue Glass Mixing/Serving Bowls - hotsell Georgia Blue