Is this an 865? If so, you're looking for the huge (relatively speaking) piece of metal you see in mine below. It will be somewhere and likely on the floor or the underside of your shoe. Without it, the crown/stem would fall out so, it was there. This is easy to find and I used to think the gold coloured lyre spring you see at 12 O'clock was small - it isn't...
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Had forgotten how oily mine was when I took it apart! Oh, also could be on the back of the dial.
Anyway, if you find it, take everything to your Watchmaker as it sounds like you're in the dark here. Don't try to refit the hands or dial as you may already have bent the shaft that the second hand sits on - they are very delicate.
Edit: I now see another thread where you posted this as well so Al's post at the same time as mine makes sense.
If I were you, I'd quit while I was behind and get it to your Watchmaker. Write it down to experience.
Hope this helps, Chris
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