Why on earth wouldn't he want a card with a picture of him and his wife together?In the situation the OP describes I would be delighted that someone would remember that I am a remaining half.
He must be sick to death (oops, sorry) of people tiptoeing round him, not mentioning his wife, not referring to her death, as if she never existed. Someone who remembers him as he still always sees himself, as part of a couple, will probably lead to tears of joy.
Daddima. I wouldn't send a card as you describe but you may like to look at chatbooks online as a present? This is a book that you can add personal photos to with captions. I think if you give it to him privately, he would be happy. He can look at it in his own time.
By the way am not advertising 'chatbooks' I was given one as a present and it is fabulous.
My dear friend died two years ago, and her family have organised a party for her husband’s big birthday. I’d like to send a personalised card, but all the pictures I have are mostly of the two of them. Part of me ( biggest part) says include pics of both of them, but then I worry it’ll upset him.