... to get your own copy of the special stamp cancellation for the Rudolph stamp.
All you have to do is:
To obtain the new Rudolph first-day-of-sale postmark, which has a 30-day extension, send requests to the following address:
RUDOLPH FIRST DAY OF SALE Station, Postmaster, 1570 Main St., Rudolph, WI 54475-9998, Nov. 6.
(Source: Linn's Stamp News)
The cancellation is free. Just go to your post office, buy one of the Rudolph stamps (49 cents), attach it to a self-addressed envelope, and mail it to the above address before Dec 6. They will send it back to you cancelled with the special postmark depicted above.
Linn's: INSTRUCTIONS FOR REQUESTING POSTMARKS