I signed up for the Aston Martin Heritage Trust "One of..." certification program at the end of April and received my information today. It costs £50 and you have to be a member of the Aston Martin Owners Club to get one, but it's pretty cool to get the definitive data on one's car. The AMHT Registrar, Tim Cottingham, does the research on a volunteer basis, so the money goes to AMHT.
I've attached my "certificate" and build data so you can see what you get if you order one, but here's the DB9 production data that's included:

Production statistics for the DB9 Volante – all model years
DB9 Volante, to end of 2012MY
LHD 3474
RHD 1756
TOTAL 5230

DB9 Volante 2013MY on (Facelift Car)
LHD 638
RHD 243
TOTAL 881

DB9 Volante GT
LHD 170
RHD 99
TOTAL 269

TOTAL DB9 Volante LHD 4282
TOTAL DB9 Volante RHD 2098
TOTAL DB9 Volante 6380

Production Statistics for the DB9 Volante, 2005MY to 2008MY (with the AM04 engine)
Manual LHD 167
Manual RHD 36
Total 203
Touchtronic 2 LHD 2575
Touchtronic 2 RHD 1381
Total 3956
The total number of DB9 Volantes built over all model years was 6,380, 2,500 of which were built for the US market.

This compares to 10,131 examples of the DB9 Coupe, 2,069 of which were built for the US market.

 

Thank you @zuman for this post. I reached out to AMHT and received my Build Sheet. I was always told that my Aston Yellow was "Sunburst Yellow". As a gift my buddy got me a small bottle of Sunburst Yellow touch up paint and I've always felt that the color was ever so slightly off. Now I know why.......My car was ordered in Porsche Speed Yellow! (Porsche AST1361D) Very cool to learn.

I'll have to wait a bit for the research to be completed on the "One of One" Certificate. They said about 4-6 weeks.

Jim

 

That's very cool. I know my spec is probably the most common Rapide, but would be cool to have none-the-less and help support the Club.

 

Resurrecting an old thread here but I'm new to Aston Martin and have been doing some reading through the forum. Thank you Zuman for posting your information. I recently joined the AMTH as a supporting member and have sent my info to Tim. What you received from him is awesome and I can't wait for the docs for my Vanquish.

For anyone considering this, Tim is very quick to respond to emails, is professional, and is proper english polite. It has been a distinct pleasure working with him so far. He's a fantastic brand ambassador.