Please note: This is a kit only. It includes the body, bogie sideframes, battery box (Because electric locos don't have diesel fuel tanks ;-)), detail parts (Vacuum hoses, horns), couplers and screws. It does not include a mechanism or pantographs. The modeller will need to source a Roco E10/BR110/BR112 locomotive as a donor for the mechanism and pantographs. The older style mechanism is required.
The 5E1 Series 1 were introduced in 1959. They differed from the earlier 5Es in that they had a new bogie design that gave a much smoother ride (The 5Es were nicknamed 'Balstampers' due to their excessively rough ride). As well as this, the roof cut-outs and the access panel arrangement on the body side differed. They were the last of the 5E series of locos to be built in the UK.
The spotting eras as modelled can be loosely defined as Early, Mid and Late.
The differences between early and mid, and mid and late are based around three modifications. As delivered (early), the locomotive pilots (NOT cow-catchers!) had four long vertical slots each side of coupler.
The division between early and mid is based on the deletion of the left most long slot on the pilot leaving four slots on the right hand side and three on the left. Studying the extensive collection of photos on hand, this appears to have occurred some time in the mid to late 1960s, over the period of a few years.
The division between mid and late is based on the deletion of the right most long slot on the pilot, leaving 3 slots on each side of the coupler. In addition, at around the same time, the MU sockets on the right hand side of the cab were replaced with captive cables and dummy receptacles for the plugs on the ends of the cables. These modifications did not necessarily happen at the same time, but were within a year or two of each other. These mods occurred in the early to mid 1980s.
The modification applied where a plate was welded over the slots from the inside of the pilots is not taken into consideration, as this modification seems to have been somewhat haphazardly applied over the years.