I see some on YouTube but don’t see any with the sympathetic stringing.

I did some quick research, and apparently a viola bastarda is only defined by its longer body (compared to the viola da gamba), they don’t necessarily have sympathetic strings.

Now I start to doubt that the name is even correct for this instrument. It could be that this is a bass version of the viola d’amore.

Maybes this instrument was a one-off and is truly unique?

It would be difficult, I know, but it would be nice if museums expanded their online collections with instruments being played

Museums rarely restore instruments back to playable condition, because this could mess up some historical details, but they create and sell plans to luthiers. Youtube is a gold mine for sound samples of reconstructed instruments, if you know what to look for.

What a lot of people don’t get is that this isn’t just a N64 clone, it is a FPGA copy with overclocking, 4k upscaler and crt emulation, and it supports wireless controllers (albeit just a few select models). It’s a good deal, if you don’t have any other retro consoles - then og hardware and a separate upscaler might be better.