I've heard from several collectors like Ralph that the red bead front sights were hated by hunters because they suck so bad in morning and twilight and would be swapped out as soon as the guys bought the guns. I'm sure it happened, but how much did it happen? Dunno.
This one just sold, somebody got a good price on a hunter. Seller just emailed me that it had the correct rear sight (after it sold, grrr). Is that a red bead front sight on it? Can't tell on my phone.
http://www.gunbroker.com/item/566218303