I got the following response from Tony at Atlanta Marine:
If the bracket has two thumb screws it is the water bonnet bracket, if 1 thumbscrew it is the Taylor bracket. The mirrors dimensions are about 6 x 12.
Taylor bracket is $73.00
Waterbonnet is $60.00
Mirror is $48.00
The pricing is actually competitive with websites I have researched. I would have guessed the brackets were the reverse (two thumbscrews = Taylor) so this was interesting news.
Cyclone, should we start a separate section to list parts prices as we learn them?
As to your offer for the mirror bracket - thanks - let me see what shape the rubber is in on the mirror Brad is sending. I want to play with the mirror a bit to see if I can get it up (the mirror) and out of my line of sight. If I can, I will PM you if I need the rubber, otherwise I am thinking about buying the tower bracket only from Monster tower at $115.