Getting a couple of autographs on an authentic NFL helmet. The helmet is navy blue which rules out a standard Sharpie. What is the best to use? And where can I buy one??

A silver sharpie! Those are awesome.

Use a sharpie, they come in different colors. Also, try going to a crafts store, like Michaels or checking out the arts and crafts section at Wal-Mart. Look in the section on scrapbooking, they usually have lots of permanent markers in various colors. Since it's navy blue, I think white would be a good color for an autograph.

The best pen/marker for a helmet would be a sharpie. You can get different color sharpie's, use a gray/silver one.

Silver or White Sharpie, you can but them almost anywhere

Well go with a silver Sharpie. You can find them at a crafts store. Enjoy your memorabilia

White, silver or gold sharpie. Sharpie's are still the best for autographs.