There was a Post-it note attached to board that does not appear to be related, but it reads, "Yup! A DC Hayes Modem card - May have been as fast as 300 baud. (Wow!)"
Date
1977 ca.
Manufacturer
Cromemco
Place Manufactured
U.S.
Identifying Numbers
Other number
1977
Copyright date that appears on both the component and writing sides.