Less expensive (free in US) is in regular white envelope with lightweight cardboard backing.
Bill Melton Cardboard Gods
Baseball Under Glass Blog - Chicago Baseball Museum
Chicago baseball report: Latest Cubs, White Sox news and notes
One more time for The Infield
Sullivan: Cubs, White Sox adapting to new MLB rules, including the pitch clock
Chicago White Sox 1970's - TAILGATING JERSEYS - CUSTOM JERSEYS -WE HELP YOU BUILD -YOUR DESIGN -PARADOY JERSEY - FUN
DOHERTY: Time to slow down young pitchers in order to save baseball
Autographed 2000 Chicago White Sox Baseball
Too much of a good thing
DOHERTY: Time to slow down young pitchers in order to save baseball