Wessex Buttons

[Neil1689]

Good afternoon. I could do with some help from members with the following three buttons 'missing' from my collection. I have never seen the first two, so they may not exist.
25mm (large) by Dowler anodised with brass back
14mm (small) by Gaunt all anodised
19mm (medium) screw buttons for an Officer's No1 Dress shoulder cords.

I enclose a photograph of my buttons collection thus far.
Any help would be greatly appreciated
Kind regards Neil