What is the correct collective noun for spectacles?

There isn't really a widely accepted collective noun specifically for spectacles (eyeglasses).

Here are some options you could use, depending on the context:

Formal:

* Set of spectacles

* Pair of spectacles

* Collection of spectacles (if referring to a group of different styles)

Informal:

* Pile of spectacles

* Bunch of spectacles

* Stack of spectacles

You could also use a more descriptive phrase like "a collection of stylish spectacles" or "a box of old spectacles."

Ultimately, the best option depends on the specific situation and your desired tone.