Good point. Here's some photos from the SRAM/ZIPP site of the current model. The Zipp logo is larger and there is a sharper bevel at the steerer clamp area groove and slightly extended tapered area on the top and bottom clamp in the photos. The OP's stem is shorter and could account for using a smaller Zipp label and graphics come in different versions over the years from what I've seen. It could also be an older version stem that doesn't look exactly the same at the steerer clamp or just distortion from the photos but maybe worth contacting SRAM about. Service Course SL Stem | ST-SC-SL-B2 | Zipp (sram.com)