Searching for a matching single cufflink is not going to be easy, but an online Store selling Cufflinks can be a great place to look for a matching Cufflink. Who knows you may even find a Person who agrees to exchange his single cufflink with you for an equally good or even better cufflink than that you have.
Placing newspaper ads in your local News papers gives you an opportunity to reach the entire niche single cufflink Market, and you have chances of getting into bigger deals than you anticipated. Though it involves a small cost in the starting it is worth spending.
Next to news papers you can select the Local Magazines on Mens Accessories. Some of the Magazines even allow you to insert a picture of the Cufflink you want and the results can be amazing. These magazine ads costs lesser than Newspaper Ads but give you great results.
Classified Ads online can take your requirements to the attention of Cufflink collectors who can help you out in your search. Create some useful resources to grab their attention.
Create a topic on the Cufflinks in the Interest creating Web portals like myspace, Squdioo so that you can find people like you interested...