TAG Heuer currently has an
Instagram Story showing the various TAG watches worn by Senna. (All of which I've previously identified in the Senna thread.) Also shown in this
Instagram Post.
However, seems like they're rewriting history a little with this picture.
First thing that's wrong is it's the grey dial, hence the reference should be S25.206. The reference shown S25.706C is of course the cream dial on brown leather strap, but that's not what's pictured.
The second thing that's wrong is the S/EL ana-digi models weren't introduced until 1989, so he never wore them in '88. In fact, in every photo I've seen of him racing during the '88 season he's wearing either a Casio or a Seiko (which I also documented in the Senna thread).