Right, but if you look at all of those, check the knobs. The knob on this one has the same dimpled pattern as the handle, with the diamond pattern simply being smooth metal. All of the ones on Achim's site have knurling - raised spikes in a diamond pattern, with the diamond patterns being separated by raised lines.
This comes up occasionally around here, the thought being the knurling changed late in 1921 to improve the grip.
What is the serial number?
Gillette NEW Standard, really?
There are other threads on this. Enjoy the shave, New Improved is not mild.