Good debate going here guys, and yes, as per all the arguments, this is not a Ringlé-Components product. From the very early days, the first Ringlé product (the trail stem, see the link in my signature), the design of the products being knee and chest friendly was always a high priority. It meant other more expensive designs were utilised, but the product was always as body safe as possible in a crash. If you check out the mombat site, the original Trail advert is scanned (
http://mombat.org/Ringle.htm ).
The zooka stem was always retained with a hidden pinch, never a split clamp. Early Zooka (and the hubs) were stickered from the factory. Just with the time it took to apply the stickers, and the high quality control that rejected any product with stickers that were not straight, eventually there was a migration to laser marking on these products (it was already in use on the Moby). This migration was around 1995. There is what we know as genine ringle product that is laser marked, lots of it.
The Logo went italic around 1997. The last catalogue year of Ringlé stuff that is "old-skool". Sun Ringlé took over, but Geof Ringlé stayed on for a year plus as a consultant, and stock moved from New Jersey to Indiana IIRC, and production began to migrate overseas.
I lose the plot here.
I know Sun suff used split clamps on the likes of the evolution stem, and there was a move away from the design of the zooka, as they didn't want to be dealing with replacement stem faceplates and stuff, so they underlined a new beginning. Understandably, Sun didn't want to be responsible for legacy product that they had nothing to do with, and understandably, they wanted to essentially be buying the brand.
This is not a Ringlé components product. Someone has obviously gone to a lot of effort to laser mark it (but if you have access to the kit, and we have laser markers where I work, its not a difficult thing to do).
It
could be a Sun-Ringlé product. I don't know so much about this product era.
Hope this helps.
see the signature links below for some additional pix/info if this helps