You may remember that I wrote about a mystery object recently and it turned out to be a keyring. Des Bull was kind enough to send it to me. It’s a delicate little object and it’s a wonder it has survived for a century.
I noticed that it has the Mabie Todd initials turned into a logo which I think I may have seen elsewhere. In any case, many thanks, Des. I’m delighted with it.
Goodwriterspens's Blog 
// I noticed that it has the Mabie Todd initials turned into a logo which I think I may have seen elsewhere.
//In any case, …
Yes, case! On some of the red card boxes!
Greetings and best wishes
Jens
And on the large ink bottles, Jens.
Best wishes,
Deb
It’s very close to the Onto logo: https://en.wikipedia.org/wiki/Onoto_pens#/media/File:Onoto_pens_circle_logo.png
Just to be clear, the Onoto logo is that of the modern company who presumably were ‘inspired’ by the MT original. The closest to that in vintage Onoto is probably seen on the faces of the ‘gentlemen’ pictured top and bottom right on p132 of the Onoto book. Sorry I can’t post pictures directly within this reply.