Graetz Restoration project

Hello dear community - I'm visiting family in Colombia and came across my grandfather's old radio that has been sat in a closet for at least the last 40 years.

I'd love to bring it back to life, if that fails, id find a way to make it into a bluetooth speaker. But I'm wondering if anyone has any leads in where to start with something like this, or contacts in Europe as that's where I'll be bringing it home to.

It no longer turns on, inside I'd filled with dust, the buttons and dials feel in pretty good nick. The screen needs some work, but otherwise I'm clueless 😂

Please and thank yous in advance, and a happy new year :)

*Additional video of interior posted in comments!