Screw back Pearl earrings

Evening all, Please can you cast your beady eyes over these Pearl earrings I picked up today. I didn't have my glasses with me but could see they were stamped something.
Now I see it says 9ct but if they were 9ct white gold would they not have a proper hallmark?. This looks a bit amateurish?.
Do screw backs still have a value? Age?
Any other hints as to quality of pearls. I've just realised I have no idea how to even vaguely assess a pearls quality.
Thanks as ever!

 

Bite the bullet!

Ah...the Pearl, that is. If smooooth, it's fake; if gritty, not.

Supposedly.

Well, it's something with which to start.

 

Pearl tasting coming up! Yum

 

They look about right; I have a few pair made of 14k yellow gold with similarly slipshod markings. They were real pearl earrings for screwback wearers who didn't want to cry to hard if one went missing.

 

I've had a look on eBay and there are a couple of similar pairs,one with almost identical stamps- I think my six year old could have done a more professional job on the mark though!.
Glad you think they look ok as I was wondering if they were legit.

 

I've seen it before, I don't think there is a problem.

 

Brilliant!. Thanks very much