I would say that the word "excellent" could be attached to a good number of razors from Gillette. Later into their production, the Tech for example cheapened in terms of production and/or materials, but remained a consistent quality and remained a very good razor. From the 1940s and 1950s, the Tech was indeed an excellent razor, as was it's predecessor (the "New") from the 1930s.
Yes, it certainly exists for me: quality materials, consistent quality of control, good shave can be achieved in a single pass, excellent in more; neither too harsh or too strong, cost was acceptable when new and absolutely acceptable today.
In many respects, Gillette is the McDonalds of shaving. Love 'em or hate 'em, they invest millions into R&D to produce a product that is capable of the job and good for the vast majority of people, crossing geographical, political and cultural lines, neither offending nor disappointing.
So, yes, the Gillette Tech - flat bottom 1940s, British Made.
... but for "truly excellent" you have to look over to the sibling forum (Shaving Tackle > SE Razors) for talk of a razor called the 1912.