Thought I'd contribute a little light heartedness to this section!
Whilst browsing through some TT first day covers for sale I noticed a "Yamaha 50th anniversary" one from 2005,
so I had a quick "Google" to see if they had anything lined up in way of celebration of 70 years this year, TT in particular.
First thing I came across was an announcement that they've changed the logo, for the first time in 27 years!
I must admit that it doesn't look much different to me, apart from the red bits have gone white & vice versa!
Then I stumbled across this webpage, on the Yamaha site, if you have a few minutes that you don't mind losing forever!
(warning:only suitable for the members of The Dull Mens Club, like me...& you perhaps?

)
https://www.yamaha.com/en/about/history/logo/