Help identifying this mid century(?) pendant

[mch82]

Hi, new member and jewellery novice here! I have this pendant and was hoping someone might be able to help identify the period and if it has any value /is by a known brand or maker? On the back it looks like it says 9W then underneath 10407 - does this mean anything? Many thanks in advance for any help.

 

[MarionC]

Could it also be SW? Sorry I can’t be more helpful. Hope someone else here can be.

 

[mch82]

Could it also be SW? Sorry I can’t be more helpful. Hope someone else here can be.

ah yes it could be, I didn't see that before!

 

[VRBeauty]

It’s definitely costume jewelry. Here are some possible atarting points for researching costume jewelry:

https://www.illusionjewels.com/research/costumejewelrymarks.html

https://www.trufauxjewels.com/