Erector Set was created in 1911.
The first Erector Set was manufactured in 1913. It was first introduced at the New York City Toy Fair in that year with the rather bulky name "The Erector/Structural Steel and Electro-Mechanical Builder".
Legos or an erector set
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The Erector Set was patented by the A.C. Gilbert Company in 1911 at the Erector Square factory in New Haven, CT.
Are you referring to an annual proof set? If so, its value is: $1800 to $2500.
Elmo erector set electric football
Each coin would have to be seen and graded for a value. The set was not produced by the U.S. Mint.
The erector spinae
Erector spinae