This is so much like it. I wonder if Solidtype designed both?

NOT THE FONT

I doubt we are every going to find this, unless you find the designer of it and ask.

If you want someone "similar" but it is NOT THE FONT -- try Camelopard -- maybe you could modify the letters and make your own font.

I think Marty is onto something. It probably is custom. There is Harold's site that has monogram fonts -
http://haroldsfonts.com/groups/monograms/

Of which the closest would be Circle Monograms

This was an OPTIFont - called OPTI Limited View

in Italic

with lines put through a gradient.

This was Ravie. Once popular - now I can only find it through Microsoft.

I believe this was Folio ExtraCond Bold - that is now worn away...

Coutinho

ANA LUIZA

Trucking Ltd. and the rest are in Avant Garde

Booter Five Zero

in medium weight