Steve,
I got my new 219 front sight from Numrich a few years ago, but they presently show out of stock. I believe I still have the previous sight in my “parts bin.” It looks to have been altered by brazing - perfectly functional, but ugly as sin. I have no use for it, but it could get you operational. I would be happy to donate it to you, if Garnett could arrange a link-up.
For a rear sight, I suggest either a Lyman or Marbles folding leaf. I have the Marbles on my 219 (photos previously posted). But, if you prefer a reproduction of the original rear sight, Numrich appears to have that available.