Thank you so much, Abel.
Now, every time you look at your wife you can think of me.
We can synchronize our watches on your anniversary.

But seriously. I did make an effort. I went back to the original thread looking for clues, but alas there were none.
I found the watch the hardest part. I knew it couldn't be the movado, the pimp watch on general principle. I saw that Abel was selling the grey Monaco, so I knew that wasn't it. Which narrowed it down to the blue Monaco and no watch.

I thought the Monaco would be a little clunky with a tux, and clash just a bit. And no watch is a nice gesture on a wedding day, kind of like declining to invite an old girlfriend.

The photo was simpler. I multiplied 31 by three, a reasonable age for a first child, then added three for the little boy's age.
I just liked 1919 better than 1918, and it put the date on the other side of WWI.

So there you go. I've revealed my methods and you can use them for Abel's next wedding quiz.

best
Allen