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?