Some of these older transformers are very interesting to see. A universal A.C. transformer with different voltage inputs and cycles or hertz is one that I have not heard of before.
I am familiar with the plug in for 220 volts for Europe that electroliner has shown, but not seen the transformer before.
Had an old Lionel B transformer but have disposed of it as it didn't work, many years ago. Have a type Z 250 watt transformer that I use for my older Lionel trains.
Lee Fritz