Yes and it looks just fine - 0.5mm too big either side looks way better than if the strap is too small - even if you are Sean Connery
Just a different experience here. I tried a 21mm on my SM300 which has the same lugs as the Speedie. It didn't fit at all. The strap is so thick that it didn't squash up as I hoped, and overlay the lugs rather than fitting between them.