1951 Topps Red Back - Front separated from back?

I sent a Monte Irvin 1951 Topps Red Back RC TTM to be signed. Well, I got it back, and the back has completely separated from the front, as in it has split completely in half. Is this common with these cards?
Thanks.
Corey
Thanks.
Corey
0
Comments
I have sets of both the red and blue backs as well as several extras and have never seen a separated one.
Jeff
Bowman Baseball -1948-1955
Fleer Baseball-1923, 1959-2007
Al