Help dating the most glorious green ruffle dress

[Olivia Smith]

I can’t remember what pinked seams mean but these are definitely pinked. Any idea of the year?

 

[Linn]

Is the zipper metal or nylon? The dress looks late '60's to me.

 

[themerchantsofvintage]

Looks late 60s to me as well.

 

[pastperfect2]

And dressmaker made or home sewn.