I'm guessing maybe an SLE model? They were an early line of limited edition cues, 12 copies per model...like the LTD, but not. It could be a custom, too. I'd send an email to Evan Clarke to be absolutely sure. Definitely early 90s-ish, maybe (very) late 80s. If no one else has a better idea, I'd probably start around $600 with the one shaft and see where it goes. I've seen a lot of Schons over the years, never that one. There are other Schon-philes on here that know a lot more than me about them, hopefully they'll chime in here...