After conferring with @scottrenus over Instagram DM's, we found out that these early Nike Blazers started getting dated in 1978. This pair just has a standard serial number (back side of the
SNEAKER INNOVATIONS - Nike Tailwind 1978 – The Savvy Ranger
1978 Track and Field News February Bill Rodgers, Nike ad | eBay
SNEAKER INNOVATIONS - Nike Tailwind 1978 – The Savvy Ranger