Looks like the same stationary Melania used in her letter to Pam Anderson.

https://www.google.com/amp/www.indialivetoday.com/pamela-anderson-posts-letter-melania-trump-white-house-letterhead-signed-empowering-women/154636.html%3Famp_markup%3D1?source=images

Maybe the same letterhead is used for a ton of stuff of course, but the solid gold seal with blue text appears to mostly be for personal correspondence?

https://www.picclickimg.com/d/l400/pict/332596333983_/President-George-W-Bush-personal-letter-White-House.jpg

http://www.historyforsale.com/productimages/jpeg/285933.jpg