OK, so I wasn’t crazy, this preview from Sartorially Inclined of Ovadia & Sons did feature the artillery tie. Sadly, it’s not up in their store.
Oh well, some more fun info on these ties here (via Sart Inc comments):
Sidenote: repp ties are so-called for the weave; nothing to do with reputation or clubs or schools. A repp tie was made from silk that’s woven in such a way as to produce tight diagonal ribs.