Custom order, maybe... I mean, we're already into a pretty special Alembic with a 20th Anniversary Model, then it becomes a 5-string, which previously we only knew about one that existed, now it turns out there is another built in the opposite wood recipe'. Brings a poetic balance to things. I'm guessing this bass is around 1990 build (can't quite read the year, but should be) so that would make it #90AM-107.
Couple things about Anniversary Model basses Goran, the Omega-cut body is proportionally a bit smaller than a regular Series I, but in this case being a slightly wider 5-string, it may be about the same size as your bass, or just a bit bigger. My Custom fretless 5-string was patterned after the 20th Anniversary Omega, with some tweaks here and there. It's not a huge difference from my Series I, but it is heavier. Being less hollow, and having a more massive neck beam accounts for the extra weight.
No idea on how many, but some of the AM basses were made in medium-scale (32"). I know for certain #89AM-008 was long-scale. Note that the pickup placement is different on the two. Could be incidental, or could indicate a different scale length... or maybe this was simply the standard location on later models. The woods for AM were: maple top/back/core with purpleheart accents, or walnut top/back/core with vermilion accents. I notice both of the 5-strings have what looks to be 3 purpleheart neck laminates.
I think it's so cool how this one turned up, and it's almost the polar opposite of the other. There can't be too many more. Maybe one of the Mods might move the thread up to Alembic-related posts where it'll catch Mica's eye?
