Help dating nylon and lace slip

[196t's]

Good morning/afternoon/night,

Can't date this pretty slip. It is very delicate, had to handwash it not to ruin the garment. As the tag says, it's 100% nylon (later than 1930s-1940s, evidently) and it has this very pretty floral lace. Laid down flat, the bust is about 12 inches wide, the hip, 15 inches and the hem's flare, 26 inches. The slip itself is 31 inches long. Any help is welcome

 

[The Vintage Vendeuse]

The label looks 1960s/70s to me.

 

[Midge]

For me it's the lace that makes it look rather "newer" than "older" - I would say 70s.