Rare Trials Spanish 1892 Mauser Question

I am going to be looking at a rare Spanish 1892 Mauser in the next couple of days, executor of the will who is dealing with a number of firearms claims that it is in 308win, I didn't ask any further questions as I'm taking this info from a inventory list.
My question is, as rare as the 1892 is has anybody ever heard of some of them being converted to 7.62 Nato while in service? Painfully I think I know the answer to my question already.........but I hope I'm wrong!!!!
I suspect I will be looking at a sporterized 1892 that's had a 308 barrel fitted to it......I hope I'm wrong as that would be a crying shame to do such a bastardly thing to a Mauser trials rifle.

Is there any hope I'm wrong?

In the event that it is a sporter, I guess it's just really another sporter and beyond that the collector value has had the life chopped out of it.......yeah?

My friend, wait for it to be in your hands first. There are a number of things it could be and a number of what ifs it could be converted to. see what you have, then go about figuring what its worth. As i see it sounds like this: .308 + spanish + mauser = chilean mauser converted to 7.62. but that how it sounds to me. after all its a mauser and it has spanish on it although its chilena, argentine etc and not spain spanish.