Both? haha. In general, the older the watch, the more imperfections, including polishing, are tolerated. In terms of polishing, the giveaways are case edges that are no longer sharp and well-defined, and similarly for the edges of dings on polished surfaces. I think it's safe to say that most enthusiasts/collectors vastly prefer original case profiles with all the character that comes with age and use over a watch that has had that character (attempted) to be polished out, especially if the tradeoff is softened case lines. Here's an extreme example that I think I saved from Speedmaster101.
