So I’ve ordered one of these.
It’s a ZX Spectrum clone built in the late 80’s / early 90’s in the ex-USSR (Ukraine). There were many ZX Spectrum clones manufactured unofficially in Russia, the particular example I have ordered (from eBay) is new, unused and sealed in its box.
It’s going to be a bit of an adventure to get this to display on a modern TV/monitor as it outputs a non-standard RGB + composite sync signal. In order to connect this to a modern (ish) VGA monitor, I’ve also ordered (from eBay, Amazon link below) one of these:
This board can take the low ~15Khz RGB signal in convert it to a VGA signal. None of this stuff has arrived yet, but I’ll post updates here later if I can get any of this to work.