Another "help me identify this chair" request.

I found this chair in a bin.
There is nothing on it … (no label, signature…)
I restored it and now I’d like to know where does it come from.
Thanks for your help.

It’s a Steelcase chair from the 70’s, not sure what the name is, I’ll look into it.

It’s a Steelcase 451-312 chair. I can’t say what year (or decade) it’s from because the chair was produced for a long stretch of time. What did it look like when you found it?