I can't say how old that one is from the die stamp on it. They still use that stamp, and it might have come into use a few decades ago but I don't have a year. It doesn't look particularly deeply hammered, like one of mine from the 60s. The lathing is neither the much older style, not particularly like the current range of lathing styles. It looks most like Class style lathing to me but not exactly what they are doing these days. So probably from the period before they had the Class series. I'm guessing 80s? 90s?
Probably pro level because UFIP only made pro level cymbals (as did Zildjian back in the day). The whole differentiation into semi-pro and beginner is probably a different time frame. UFIP has gone that way, using different alloys (B15 and B8). But I could be wrong on it being B20. I've learned not to make firm pronouncements on alloy from somebody else's photos where the color balance is unknown.
Here are some things about Italian cymbals but without many actual dates attached:
http://robscott.net/cymbals/italian-cymbals/
At that price it is a great deal, although without knowing more about the weight it could turn out to be more of a ride than a crash. If it were near me I'd grab it. And if you grab it and don't like it, just PM me and if you are willing to ship to New Zealand I'll take it off your hands, provided shipping isn't too crazy high. Maybe you can ask about the weight first. I'd be looking for something under 1400g.
If you want to know what 18" UFIPs sound like:
[ame="https://www.youtube.com/watch?v=hNFluZ9GjSg"]UFIP Class Fast Crash Cymbal 18" - YouTube[/ame]
[ame="https://www.youtube.com/watch?v=dY75nYzYUrI"]UFIP Class Medium Crash Cymbal 18" - YouTube[/ame]
Bright with lots of top end.
I've got a 14" pair of Class hats (maybe 10 years old?) and 3 x 20" rides (two from the 50s one from the 60s although the dates remain uncertain).
Hope this helps.