Price as you will have heard many many times is subjective as you could stick this in auction and get 450 one day and 280 another. I would err in the lower end of the estimate. As you say, it has lost its original artwork and backflash and been painted - you could tidy it up. The other thing is, it may have been put in a different cabinet, can’t be sure, but the hinges are odd as this looks like an Oliver Whales machine similar to the below copied from another thread. If your relative stuck it in an auction and sold it for say £320, they would get less, say £270..... Would be interesting to see what others make of it, as I would err cautious and pay below this number, especially when something has been painted like this, which does not look like really old paint. Also the wood on the door is quite rough..... Would be a good project to see what is underneath, but I would not pay too much... Good luck.