This pair of cufflinks is called Sky Captain. It seems the cufflinks aren’t associated with Sky Captain & the World of Tomorrow. But this doesn’t affect the fact that it’s a nice pair of steampunk cufflinks.
As we can see, each Sky Captain cufflink is shaped as a vintage aircraft nose with a screw propeller. Every pieces of the cufflink are made of silver plated brass, and mounted together using a waterproof welding agent. Apart from that, from the images, those exquisite details make the cufflinks stand out in a crowd.
This pair of Sky Captain steampunk cufflinks is available in two colors: silver and gold. Each pair is priced at $35 USD. If you’re interested, jump to Etsy for more details.