I can see Eheim written on the pump in one of the pictures and the eheim range of pumps can be used as external or submersible pumps,but it does seem to be missing the cage of the front which acts as a filter when being used as a submersible.The eheim 1260 sounds about right should be around 600 GPH ,could be a 1262 but not sure how much of the lable is still there,well those are eheims figures. The picture below shows one with the cage fitted on the front