Looks like the original was a 12x18 book cover in 1949:
https://www.dc.com/blog/2017/08/25/superman-a-classic-message-restored

You might be able to take the 11x10 version and get it sized up at a print shop!
Looks like the original was a 12x18 book cover in 1949:
https://www.dc.com/blog/2017/08/25/superman-a-classic-message-restored

You might be able to take the 11x10 version and get it sized up at a print shop!