Strange, thick crash

[Gilnar]

When the old rehearsal room was being reconstructed, we were given some trash left by previous bands: old amplifier, some drumheads, some cracked cymbals. This 15" crash was among them. It has no stamp or anything. Almost no visible hammering and strange, deep grooves on the top. On the bottom, the grooves look almost like Amati. It is very thick, so we could solder it and now I use it. It has darker sound, sometimes almost splashy.
Pictures http://gilnar.rajce.idnes.cz/Tajemny_cinel-Mysterious_cymbal/
Any ideas what it is?

[Gilnar]

I asked my teacher and it's some old Amati cymbal originally meant for brass band. Somebody tried to make it thinner with sandpaper and chisel.
Oh the subtle beauty of improvisation, huh?

[Jaye]

It hurts just to read that.....electricit

[Drumaholic]

Sandpaper and chisel?

Yes. That's always seemed to work quite well for me in all of my cymbal modifications.