Bought this pre block on E Bay it was in great condition. After shipping not so good condition.
...
I am going to repair it by brazing or welding during the restoration.
Wow, that's practically criminal. What a bummer! My 115.7575 pre-block also had badly cracked (though not broken off) inner wheel guards. I took them by a local welding shop and they quoted me $75 to repair them. I just couldn't swallow $75 (I paid $60 for the whole thing, before putting money into the restoration), so I sat on it a while.
A friend of my dad's owed him a favor and he got someone who 'used to weld for the RR' to tackle it gratis. I couldn't be there, or even talk to the guy doing the repair (I was traveling), and I don't think he did a particularly good job, but now it is what it is. I don't think he pre-heated it or used the right rod for cast iron, but it's a little better looking after I ground down his welds (gave me an excuse to buy an angle grinder, so in retrospect, not sure I saved over just paying the first guy $75...but at least I got a grinder out of it).
Here's a before and after. I'm not sure it's much of an improvement, but I'm going to toss it in the electrolysis tank one more time, then paint it when it's a little warmer. Maybe I'll find an intact set of wheel guards and replace these one day.
I hope you made the seller/shipper eat some of that...
I think I'd have made him eat all of that, and pay to have it returned to him if he wanted it back. What did he do, toss it in an empty box with a couple of hammers?