These decals were designed to fit the 1/48 scale Esci S-3 Viking kit (also re-boxed by AMT/ERTL and later acquired by Italeri).
The options on this decal set are:

S-3A Viking BuNo. 160736, Naval Air Test Center
US-3A Viking BuNo. 157998 "Miss Piggy 1". VRC-50
S-3A Viking BuNo. 160161, VS-21, USS Kitty Hawk
S-3A Viking BuNo. 159402, VS-28, USS Forrestal
S-3A Viking BuNo. 159389, VS-29, USS Ranger
S-3A Viking BuNo. 160121, VS-31, USS Dwight D. Eisenhower
S-3A Viking BuNo. 160588, VS-38, USS Enterprise

Accurate stencilling and national insignia to build any one of the options is included. All of the decal sheets in this set were professionally screen printed by Cartograf in Italy
.