On a much lower value when I was looking to buy an Elise nearly 20 years ago I was interested in a Millennium edition.
The Millennium could be had in either 111 or 111s spec with the VVC engine.
Normally the 111s looks quite different to the 111 with different wheels, seats etc, but the Millennium edition looked the same, both engine options with 111s wheels and seats etc.
There were many owners and even non Lotus dealers adverting Millennium edition cars as 111s when they were not.
I remember going to see a car privately advertised as a Millennium 111s, and the seller was gutted when I lifted the engine cover and told him he had the basic 118BHP 111 not the 143BHP 111s varient.
He was adament his was the 111s until I proved it with it not having the VVC inlet plenum.