Erector sets have been sold by Alfred Carlton Gilbert since 1913. He came up with the idea during a train ride, when he saw steel girders being erected for power lines. They were one of the first toys that you were able to build something with, then tear it down and use the pieces to build something else.
From 1933 to 1962 the boxes that the sets came in where made of steel.
Gilbert died in 1961. The company went into decline and filed bankruptcy in 1967. The rights now belong to a french company called “Meccano”.
The most sought out erector set is the Number 10 from 1931. It weighs in at an amazing 25 lbs!
This is an ad from 1922 that was posted on Wiki. Look at how big this set was!