The primary color mixing bowl set is the first multi-colored Pyrex mixing bowls set that was made. These 4 bowl sets began to be manufactured in the 1940s. They are referred to as the 400 series bowls or the Primary Color Bowls. Many Pyrex collectors consider the Primary Color Bowls to be the standard when it comes to collecting vintage Pyrex cookware.

The Pyrex Primary Colors Mixing Bowls set contains a 4 quart yellow bowl that is 10 inches in diameter, a 2 and 1/2 quart green bowl that is 8 inches in diameter, a 1 and 1/4 quart red bowl that is 7 inches in diameter, and a 1 pint blue bowl that is 5 and 1/2 inches in diameter.

2 Vintage Pyrex Spring Blossom Crazy Daisy Green Mixing Bowls 403 402 NR
2 Vintage Pyrex Spring Blossom Crazy Daisy Green Mixing Bowls 403 402 NR
Paypal   US $9.99
VINTAGE PYREX CLEAR BOTTOM MIXING NESTING BOWLS SET OF 2 PINK SALMON TAN MOCHA
VINTAGE PYREX CLEAR BOTTOM MIXING NESTING BOWLS SET OF 2 PINK SALMON TAN MOCHA
Paypal   US $8.99
Vintage Pyrex MIXING BOWL 402 FOREST FANCIES
Vintage Pyrex MIXING BOWL 402 FOREST FANCIES
Paypal   US $4.95
Vintage Pyrex MIXING BOWL 401 OLD ORCHARD
Vintage Pyrex MIXING BOWL 401 OLD ORCHARD
Paypal   US $4.25
Vintage Pyrex MIXING BOWL 403 FOREST FANCIES
Vintage Pyrex MIXING BOWL 403 FOREST FANCIES
Paypal   US $10.00
Vintage PYREX Glass Teardrop Mixing Measuring Batter Bowls Full Set EXCELLENT
Vintage PYREX Glass Teardrop Mixing Measuring Batter Bowls Full Set EXCELLENT
Paypal   US $50.00
Vintage Pyrex Bowl 15 Qt Baking and Microwave
Vintage Pyrex Bowl 15 Qt Baking and Microwave
Paypal   US $7.75
Vintage Pyrex Bowl 2 Qt Ovenware
Vintage Pyrex Bowl 2 Qt Ovenware
Paypal   US $7.75
VINTAGE PYREX SHENANDOAH MIXING NESTING BOWLS SET OF 2 4 Q AND 25 Q
VINTAGE PYREX SHENANDOAH MIXING NESTING BOWLS SET OF 2 4 Q AND 25 Q
Paypal   US $19.99
VINTAGE PYREX MIXING BOWL TERRA PATTERN 2 1 2 QUART
VINTAGE PYREX MIXING BOWL TERRA PATTERN 2 1 2 QUART
Paypal   US $4.99
VINTAGE PYREX BOWLS WITH SHENANDOAH PATTEREN 2 OF THEM
VINTAGE PYREX BOWLS WITH SHENANDOAH PATTEREN 2 OF THEM
Paypal   US $5.99
Lg2 Vtg Antique Old Pyrex Mixing Bowl Glass ware Kitchenware Home Decor Cook USA
Lg2 Vtg Antique Old Pyrex Mixing Bowl Glass ware Kitchenware Home Decor Cook USA
Paypal   US $9.66
Vintage Pyrex Mixing Bowl Autum Wheat 25 Qt No 403
Vintage Pyrex Mixing Bowl Autum Wheat 25 Qt No 403
Paypal   US $24.99
Vintage Pyrex Mixing Bowl Butterfly Gold 25 Qt No 403
Vintage Pyrex Mixing Bowl Butterfly Gold 25 Qt No 403
Paypal   US $24.99
Vintage Pyrex Mixing Bowl Old Orchard 25 Qt No 403
Vintage Pyrex Mixing Bowl Old Orchard 25 Qt No 403
Paypal   US $24.99
Vintage 4 pc Set Pyrex Primary Mixing Nesting Bowls 401 402 403 404
Vintage 4 pc Set Pyrex Primary Mixing Nesting Bowls 401 402 403 404
Paypal   US $74.99
Vintage PYREX Orchard Mixing Bowls 403 401
Vintage PYREX Orchard Mixing Bowls 403 401
Paypal   US $14.99
Vintage Pyrex Mixing Bowl Set Primary Colors Yellow Green Red Blue
Vintage Pyrex Mixing Bowl Set Primary Colors Yellow Green Red Blue
Paypal   US $46.01
Vintage Pyrex 4 Mixing Nesting Bowls Pottery Glass Cookware Kitchen
Vintage Pyrex 4 Mixing Nesting Bowls Pottery Glass Cookware Kitchen
Paypal   US $19.99
Vintage 402 Two 2 Tone Red to Orange Pyrex Mixing Bowl 1 1 2 Qt MINT
Vintage 402 Two 2 Tone Red to Orange Pyrex Mixing Bowl 1 1 2 Qt MINT
Paypal   US $9.99
Pyrex 2 vintage mixing bowls white with autumn designs
Pyrex 2 vintage mixing bowls white with autumn designs
Paypal   US $14.99
Vintage Set of Pyrex Mixing Bowls Green Spring Blossom Crazy Daisy Design
Vintage Set of Pyrex Mixing Bowls Green Spring Blossom Crazy Daisy Design
Paypal   US $9.99
Vtg Federal Pyrex Mixing Bowl Dogwood in Brown Black Hawaiin
Vtg Federal Pyrex Mixing Bowl Dogwood in Brown Black Hawaiin
Paypal   US $3.99
VINTAGE 4 PC PINK CINDERELLA PYREX MIXING BOWL SET NICE SET
VINTAGE 4 PC PINK CINDERELLA PYREX MIXING BOWL SET NICE SET
Paypal   US $43.00
Vintage 4 Pc Set Pyrex Amish Blue Butterprint Aqua White Nesting Mixing Bowls
Vintage 4 Pc Set Pyrex Amish Blue Butterprint Aqua White Nesting Mixing Bowls
Paypal   US $20.70
Vintage Pyrex Mixing Nesting Bowls Brown with Fruit 1970 Original Set
Vintage Pyrex Mixing Nesting Bowls Brown with Fruit 1970 Original Set
Paypal   US $19.99
4 Vintage Pyrex Cinderella Gooseberry Mixing Bowls
4 Vintage Pyrex Cinderella Gooseberry Mixing Bowls
Paypal   US $31.00
Vintage Pyrex bowl green Spring Blossom 1 1 2 pt
Vintage Pyrex bowl green Spring Blossom 1 1 2 pt
Paypal   US $15.75
3 Vintage Pyrex Mixing Nesting Bowls Amish Aqua Blue White
3 Vintage Pyrex Mixing Nesting Bowls Amish Aqua Blue White
Paypal   US $47.50
Vintage Pyrex Bowl White Gold Flower Butterflies design
Vintage Pyrex Bowl White Gold Flower Butterflies design
Paypal   US $3.00

Although the Primary Colors Pyrex Mixing Bowls set is not rare, it is extremely popular among collectors. As a matter of fact, this set is considered to be the most sought after. It can be quite easy to find the smaller mixing bowls in excellent condition. However, the larger bowls can be a little more difficult to find. Because of their larger size, they are more likely to be damaged or broken. These mixing bowls nest inside one another for ease of storage. Because of this characteristic, it is not unusual to find complete, four bowl sets in good condition. As with most collectables, condition greatly affects the price. If you are purchasing bowls from an online auction, be sure to request clear photographs or detailed information regarding the quality of the bowls.

Throughout the years, there have been some color variations in the Primary Color Pyrex Mixing Bowls set. Collectors should also be aware that the oldest sets are not numbered on the bottom. The mixing bowls were not numbered until the 1950s and continued to be numbered until the 1970s. Be cautious if a seller claims that a bowl set is old because it does not have numbers. It is possible to remove the numbers on the bottom of the bowls by grinding them off. It is also possible that the bowls are a newer set that was made with older molds. Sometimes, the numbers would wear off the molds and not imprint on the bowls themselves. Find out if the bowls set comes with the original box. This will help you to determine the age of the bowls and if they were originally sold together as a set. Check the thickness of the bowl walls. Bowls made in the 1940s are thicker than their newer counter parts.

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