By looking at the box graphics, I'd estimate these American made ornaments were made in the late 50s, or early 60s. Probably dead stock, these ornaments from Rauch Industries are unbreakable, but have old-school brass loops for hanging. Quality American construction, when such a thing existed.

Balls measure 3 inches across, and the unopened (?) box measures 9 x 10 x 3. 25 inches. I imagine these were manufactured to be hung on those new fangled silver trees, as ornaments had to be very lightweight. The silver threads on the ornaments will reflect the color wheel colors similar to the rest of the tree. If you need another 5, I have a second box with 9 slightly smaller ornaments, that look identical, but are labeled "glass".

This item is sold from a vintage boutique in Las Vegas, Nevada.