At the time of this ad, New England Oyster House only had five locations in Dade and Broward counties:

900 S. E. 24th Street, Ft. Lauderdale (phone JAckson 4-7223)
760 Dania Beach Boulevard (A1A), Dania (phone WAshington 3-4164)
12727 Biscayne Boulevard (US1), North Miami (phone PLaza 4-1511)
280 Alhambra Circle, Coral Gables (phone HIghland 4-1603)
16915 South Federal Highway, Perrine (phone CEdar 5-5701)

They had not taken over the old Chesapeake Seafood Restaurant at NW 36th Street and NW North River Drive yet or built new restaurants at several other locations in Dade and Broward.