The early PT1911 had sights licensed by Heinie. When I wanted night sights I changed them out. If you are looking for original sights let me know and I'll see if I still have them. If you want to keep the night sights, Novak's can put new vials in them.
The sights you have will fit the dovetail that the Heinie night sights came out of ? If so I would be interested ,the prior owner painted white dots over the vials . I have an older pt1911 38 super that has Novak sights but they aren't night sights . Thanks for the interest and the reply .
Surprisingly, I was able to dig them out of a parts drawer and they look good, except I think I cooked the plastic white insert in the front sight a little. The original sights on mine were 'Heinie'-licensed 'Straight 8' white dots. I'll PM for address, etc.