I have companies in both Japan and the US. It's a fun though experiment at the very least. I don't think I'd ever execute on something like this, but a software development agency "since 1876" would be a great conversation starter.
They had an idea for a college brand of clothing and repurposed an old, dying hunting brand in the company lineup to give the new brand authenticity and a nice number to follow “est. “ in their branding.
In your example the younger company is absorbing the older one, so the old ceases to exist.