Chinese Symbol for "Lucky " Cufflinks

We are assured by our suppliers that these cufflinks are the wording for "Lucky" in Chinese. However, if this is not the case, please both let us know and accept our humble apologies for any unintentional insult caused. There has also been some debate if one or more of these are upside down - again, please let us know! Dimensions (LxWxH): 13mm x 15mm x 3mm (approx.) Weight per cufflink: approx. 4g (light)