When I bought my MK3 MX5 it had a half decent touch screen stereo fitted and the seller left me this original stereo in the boot, trying to work out what model it is, basic or higher as I want to sell it.
Part number is NG34-66-AR0 but I cannot find much info online about it. It’s out of a 2007 2.0 Sport.
The only difference I noticed when compared to the very basic ones is that this one has a MP3 sticker next to the load button.
I’ve got the same unit, bog standard unit mine also from a 2007 sport
I’ve upgraded to and aftermarket unit
Not much call for them now unless someone wants to put theirs back to standard but have sold on the original, or they like the original look.
Worth more to keep it just in case of the above, probably worth around £30 if put on eBay or such sites. Believe me I tried to sell mine for that amount, no takers.