questions about Luftwaffe single button M43 style caps

[Sgt Heat]

I know the luftwaffe began making m43 style caps as far back as 41, single button versions. The single button ones are what you often see in the pictures. And most single buttons are dated before 1943 but some are 1943 and 44. What are the values on these, these days. I see the double button ones at like, 400 to 550 but I don't see a lot of single button hats for sale. I usually see ten or 20 double buttons for every single button. Also I have a couple with round metal vents on the side. watts the significant and value of those? thanks in advance - Joe

[robert]

I've always found these one button hats hard to find. Some collectors like the two button ones better I think becuasethey look more like the army ones which have two buttons.

[Sgt Heat]

Also would like to now some aprox values on luft officer M43 style caps. I rarely see them. They are raredr than Army or SS I think. thoughts?