Are these period appropriate eyeglass frames?

[MisterGrey]

This past week I had the pleasure to see for the first time "Picnic at Hanging Rock," an extraordinary 1975 Australian film which I've been dying to watch for ages. The wait was worth it; also, being set in 1900, it afforded me the chance to dig some groovy period costumes. However, one detail seemed glaringly out of place: The eyeglasses worn by one of the girls in the movie. I've provided a (admittedly fuzzy) screen cap below. Were non-horn rim black-rimmed frames readily available at the turn of the century? Were they simply painted-over wire rims? I look forward to input and analysis:

 

[vitanola]

Frames covered with celluloid (Zylo) became available by about the time of the Great War for Civilasation, but did not become popular until the 1920's.

The "dropped lens" frame (with the bridge and templepieces in the upper quarter of the frame) were also a 1920's innovation.

A girl of her age in about 1900 would have most probably worn rimless spectacles or eye-glasses (pince-nez).

Pince-Nez were almost universally worn by the generation born between 1870 and 1890.

Save for special purposes, such as riding or driving, spectacles were considered to be a bit old-fashion in the last decades of the nineteenth century.

In the new century, however, the younger generation adopted the many improved varieties of spectacles which were introduced to the market, perhaps because they were much better suited to motoring then pince-nez.

By the 1920's, eyeglasses were almost entirely relegated to the over-forty crowd.

The eyeglasses worn by the girl in the photo were common modern frames "in the old style" available in the 1970's and early 1980's. I once owned a similar pair.