I've been given these two engines by my dad and need help identifying them please as I intend to put them on sale. The green GWR engine I recognise as the engine I had as a kid on my first train set. It's a hornby engine, I know its oo gauge and I'm guessing 25-30 years old. The black engine I cant find any identifying marks. I'm guessing oo gauge as its roughly the same size as the other. Both are non runners ( they failed the battery test lol ). If anyone knows these engines ( year / make etc ) I'd be grateful for your input. Thanks in advance !!