Dont often see Revo cooker, although of course the name disappeared in the 1960s. Interesting cooker, it seems to have a socket on it although I cannot see where. Timer will work with oven or plates or socket apparently. It seems to have some sort of rotating cooking guide as well. Oven oven element not working could be a deal breaker though as finding another will not be easy. It looks like the cover over the grill/warming plate has distorted over the years
The cooker itself is nothing to write home about, its quite BOL. But I have never seen a cooker with sculpted doors like that before - its in keeping with what still is quite a popular style of kitchen door.