Carnival ? Vintage footed silver flash bottom ? bowl what is it

[tmmassari]

Hi new to the posts here
Looking for some information on this iridescent blue bowl with completely silver bottom
All glass ..
Measures about 7" across HAs 3 feet
No marks or names

 

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[duggap]

From your first picture, it looks like carnival glass. If that be the case, most carnival glass was made before 1925.