24Pouces:
I'd seen that Bridgestone ad...but it didn't explicitly say that the Bridgestone had direct design input from Ritchey, (just that he had tried to make a cast crown in the past) so I wrongly assumed he didn't.
However, you're right on the '93 Bridgestone MB crown having input from TR (from Bridgestone via Sheldon Brown):
Ritchey's own mid-80s crown is a brazed plate build
The Bridgestone/Ritchey is a '93 cast cromoly version, with long points on the inside faces:
And the Pacenti is a 2008 (?) version based on the Bridgestone/Ritchey but with curled points:
From Kirk Pacenti himself :"An instant classic! This crown was modeled after the very rare and highly sought after crown Tom Ritchey designed for Bridgestone many years ago. Kirk Pacenti updated and improved this crown for 21st Century framebuilders."
So your MB-1 fork hasn't got any Pacenti in it, but is the much rarer Bridgestone/Ritchey
All the best.