It looks like a modern take on those classic British heavy-duty bikes of yore, the type that still abound in India and doubtless other ex-colonies under names such as Hercules and Atlas. The lugless construction, seatstays that are not bolted on to the frame, and unicrown fork, all obviously make it much more recent and the size of the downtube indicates an aluminium frame - so it's curious that it has the double top tube, which must add weight and isn't really necessary with modern materials. Very odd. Or is it really made out of tin plate? I'd guess it doesn't originate in the UK - maybe from Holland or Scandinavia? Intriguing.