Just the design of the box art work old boy. From what I remember the ESCI kit (pronounced Esh-she, I believe, the initials meaning Ente Scam bi Coloniali Internazionali, or Company for International Colonial Trade) was an early production F1, and was re-boxed by Revell, back in the early 1980s.
ESCI are no more, although many of their moulds survived, and are now under the Italeri (was Italieri) label, with others under the AMT, Ertl and Revell labels, among others.
I have no idea what that kit is like, as some ESCI kits, at the time, were good (for the period), and others very basic. The Tempest V springs to mind, being extremely basic, although fairly accurate in outline, and, years later, it formed the basis for the expensive Eduard kit, utilising the same basic parts, but with many Eduard bits and pieces.