Adventure Comics #349 Superboy

DC 1966.
Superboy And The Legion Of Super-Heroes.
First appearance of Rond Vidar.
First appearance of Universo.
Fun fact: this issue contains a full page ad for the Batman movie, which came out in 1966, featuring Adam West as Batman and Burt Ward as Robin. Plus, on the back an ad for Aurora Bat-toys.
FN.