It's an older design. If I were to start to show you all the different D51's that Plarail have produced over the years, I'd still be here compiling the post tomorrow! Those aren't the only two designs of piston rods, and they didn't even have tenders for many years.....
![[Image: D51Black.jpeg]](http://parlorfleur-pm.com/boxtype2/D51Black.jpeg)
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