Whats Odd with this Train Set?

[Super]

I am not exactly sure if this train is a Plarail but I found it strange. Besides the metal on/off switch on the front of the engine (like the old Plarails) does anyone notice something very odd about this train? Going for a high price, might it be rare? http://www.jauce.com/auction/b230284336

Can you see whats Odd?

Its certainly a legit vintage Plarail D51 by appearance, but I dont know my vintage logos well enough to say if its a clone or not.

[Super]

But there is also something very strange about this.

Plarail D–51 Express Train version 2.
Sold between 1971-1976. Made in Japan.

Difference between version 1 and version 2 is the coaches.
Version 1 coaches have pantographs. Version 2 coaches have no pantograph.

-plarnold

[Super]

Very cool, thanks Plarnold. Was the version 1 sold before the version 2 1971?

Do you notice the oddity?

[Super]

Lets make a game of it. Whats odd is staring you in the face!

Lets make a game of it. Whats odd is staring you in the face!

I think I may have got it, were is the tender?

[Super]

Bingo, We have a winner!

Strange how they omitted that in a set isn't it?

I've been beaten to pointing out the major oddities.. The only one that hasn't been mentioned yet is that the couplings appear to be a different style (most likely far weaker than the current type), since they are thinner and have a slightly different shape.

[Super]

Another, Old release that has strangely not included the required tender for the engine. Wonder why? http://www.jauce.com/auction/t490315457