Wedding etiquette says it is gauche to ask for money as a wedding gift, but the Shugi-Bukuro, a Japanese wedding tradition, says ask for what you want and specify the amount.
|Wedding Cultural Favors|
"Guests attending a Japanese wedding reception are expected to bring Oshugi, a cash gift. Sometimes, the amount is specified on the invitation. Typically the amount depends on the guest's relationship with the couple. The cash is presented in a decorative envelope called Shugi-bukuro." [source: Worldly Weddings]
The amount given is usually an odd number. This is done to symbolize that the couple cannot be divided. If the leading number forms an even number ($200), an odd number of bills are given. Also gifts with the lead number of 4 is not recommended. 4 in Japanese is pronounced shi which is also the same pronunciation for death. Like wise for the number 9, which sound similar to the word for suffering. So it sounds like $358.53 will be the perfect amount.
Here is a modern take on that important envelope.
|Keetee Garden Photograph Money Envelopes|