Tomy Donald coupling replacement

It's easy to lose a tender or other if the coupling is either broken or loose, but if you have a old Tomy Henry or Gordon you can do a simple replacement, instead of the couplings that you have from before you can switch it and now on you have a permanent solution, so then you won't lose it.
i prefer the original couplings, but with the original one it's a big gap, so it's more presentable (think that is the right word to use)
But here is what it looks like with a Tomy Donald.







The top part of the tender is "universal" so it will work both ways except for that the buffers are at the front and the hook at the back.
Blueberry'S'