What you actually purchased was the Omega 232.32.46.21.01.005. Same watch with rubber bracelet.
http://watchbase.com/omega/seamaster...2-46-21-01-005
If you want the SS bracelet for that Omega PO, (232.32.46.21.01.003), I would try and source a bracelet for that model number.
I have an Omega Seamaster 300M and was running into the same problem identifying the correct bracelet p/n. They are stamped on the inside of the clasp and are easily identifiable when the clasp is open. Problem is I can't find a pic of the clasp open to see the number.
Also, if you take it to an Omega AD, I'm sure they could source a bracelet for you.
Sorry, but that's all I could come up with.