Modern Vespa

As the mirrors got vorse on 2023; smaller, stupid, ugly and non-waterproof, so is the changeability to previous round real mirrors ok, or is there a change of the thread-sizing?

Yes, there is a change from M8 (Pre-MY23) to M10 (MY23 and later).

Argh! Got it!
They changed first the threading to opposite and then even mm-size. Darn!

So. With this: https://www.emc24.fi/tuote/peilin-kiinnitysadapteri-m8-oikea-m10-vasen-musta/ I'd get this mirror put on, but sure look not that chic: https://www.sip-scootershop.com/en/product/mirror-piaggio-cm073407-left-for-vespa-gts-gts-super-gt-gt-l-125-300ccm_PI073407?usrc=gts%20mirror%20left%20piaggio

I wanted longer mirrors on my 2023 GTS, and I had to shop around for thread adaptors to fit them. Got them online, but I can't remember the source. They only came in pairs, so I had to get two left-hand and two right-hand. I can see behind me much better now.

My left-hand lollipop mirror got stolen, and everywhere I've seen in the US is backordered right now. 😖