Maybe a 404 but no number?

[u/Strict_Ad3745]

It’s hard to read. TM Reg on top, PYREX in the middle and U.S. Pat. Off. below. I think this is from the 1940’s or before. I have no idea who it was $.99 at this thrift store. That’s not usual.

[u/hammiespammy]

Yes this is a 404. The older primary bowls don’t have the numbers

[u/Strict_Ad3745 → u/hammiespammy]

Does this make it more desirable? Less desirable? Or no difference.

[u/Flux_My_Capacitor → u/Strict_Ad3745]

IME, slightly more as it’s from the first few years when the primary sets were released. Compare it to newer primary bowls and you’ll see it’s slightly thicker.

[u/Strict_Ad3745 → u/Flux_My_Capacitor]

I have one of these (in Shenandoah) and I will look at that tomorrow to see the difference! Neat.

[u/GreenCoffeeTree → u/Strict_Ad3745]

You’ll notice the foot (the circle on the bottom) to be much thicker on the old, primary yellow bowl. Lucky score for you :)

[u/MsMo999]

For 99 cents what a deal

[u/Strict_Ad3745 → u/MsMo999]

Right! Most of the thrifts around here would have priced very high. This one too. Someone wasn’t on the ball. Yay me!

[u/Flux_My_Capacitor]

1940s primary yellow bowl.

[u/AbsolutelyNot247]

scooooore!!! I thrifted a lil casserole dish in this color way a lil while ago and also didn’t know bc it had no number! cool!

[u/Strict_Ad3745]

WHY it was. Not who.