https://www.mercurynews.com/2022/05/18/ask-amy-i-told-him-i-found-his-funny-gift-disturbing-and-he-got-angry/

Dear Amy: My partner, “Chris,” just showed me a gift he bought for his adult son. This gift is a “verified” personal calling card once owned by Adolf Hitler (Hitler allegedly gave them out to people he would meet).

Chris purchased this card from an American museum’s rare-items collection and spent quite a bit of money for it.