This is close to the last item from a deceased estate I am clearing. It's a lovely tank, but what's it from? Nicely made, with the bottom edges rounded to roll under, it looks European; but the threads are all Imperial, so I guess it's British. It has (or had) a hand auxiliary pump. That makes it a very early saddle tank, 1925 or 1926. Best suggestion I've had is OEC, and it could be; but all I can find on OEC is either later or so focussed on duplex steering that the tank gets neither mention nor photo. Mountings are 9" x 5 1/14".