I did some searching, but didn't find anything conclusive, so ...

Can anyone confirm that what I'll call the "hollow back" letters below are from the early 70s? I understand that what I'll call the "solid back" letters pictured below are repops made within the last 5 years or so.

"Hollow Back"

Name:  Hollow Back.jpg
Views: 160
Size:  86.7 KBName:  Hollow Back.jpg
Views: 160
Size:  86.7 KB

"Solid Back"

Name:  Solid Back.jpg
Views: 155
Size:  123.6 KB