Great Britain, 10 Pence Elizabeth II 3rd portrait, 1992

I have noticed there are 2 different types of coins (different thickness) in the circulation. Could you confirm and if so could you please create the second one to the list. The existing one states thickness 1.78mm, not sure what the other thickness is, but the coin looks thiner.
 
 Many Thanks
Giuseppe75

https://en.numista.com/catalogue/pieces879.html

 Some years ago I found out there are SIX types of 1992 10p coin! There are five versions of the coin in the link above (the new smaller size KM# 938b) plus the one larger 1992 KM# 938 coin.
 The five versions are ...
Rounded edge (which may be the type that looks thinner)
Square edge - between / at  border
Square edge - at / between  border
Square edge - between / between  border
Square edge - at / at  border
 Trying to explain those last four is a bit tricky. I'll see if I can get some pictures taken - but it means on the obverse whether the I in ELIZABETH points between the edge dots or at one; and whether on the reverse the base of the 1 in 10 does the same. Here are two pictures showing round and square edge ...

                            

Took me a while, but here are obverse and reverse close up ...


 

added the minor varieties and new mintages. please adjust your collections.
however: I don't see any rounded, square edge differences. your images do not help either.
while the alignment of lettering seems clear and verified. I noticed these differences on my coins, too
thanks

 They are easier to tell the difference once held in the hand. I can spot them straight away, as I have been looking for them for years! I know that if it has a rounded 'wire' edge then I do not bother to check the front and back, as the differences only occur on the square 'flat' edge coins. I took another picture, which shows them slightly apart from each other and with a back light.
  Also there is confirming information halfway down this page ...

http://www.coins-of-the-uk.co.uk/dec10.html

Thanks a lot for your help but I still can see that the varieties from "www.coins-of-the-uk.co.uk/dec10.html" and the numista list are opposite.

'Coins of the UK' by Tony Clayton:
Obverse 1: L,I and A in ELIZA point to space between dots
Obverse 2: L,I and A in ELIZA point directly at dots
Reverse A: 1 of 10 points directly at a dot
Reverse B: 1 of 10 points at a space between two dots

Numista:
Type 1: "L" and "I" in "ELIZABETH" aligned to dot
Type 2: "L" and "I" in "ELIZABETH" aligned between two dots
Type A: "1" in "10" aligned to dot
Type B: "1" in "10" aligned between two dots

Can you have a look at this matter.
Many thanks
giuseppe75

it should be ok however: description on the site you mean is like
2-1 A-B. they're somewhat mixed up because of "between"-"directly"-"directly"-"between" order
so I tried to make it clear with the description on the coin sheet.
rare and very rare issues are marked.

So, if I'm correct in order to follow the suggestions of 'Coins of the UK' you should invert Type 1 and Type 2 to show:
Type 1: "L" and "I" in "ELIZABETH" aligned between two dots
Type 2: "L" and "I" in "ELIZABETH" aligned to dot

I was not following the order of that catalog - so Type 1 / Type 2 are not the same Type 1 / Type 2 as in
that book. But I think that there's no need to change that again unless there are reasons to do so.
ok?

makake trust us it's wrong...
there's no type 1a wire... it's 2a in Numista case.
so you must change type 1 with 2 to match other sites...
I have a type 1a wire coin...but I can't add it here because it's wrong...

ok - but I don't know what to change now without messing up people's collections now.
so the order should be "A-B-2-1" or what?
please describe "en detail" what entry is to change to what...

i've already modified it...
it s ok now.

you mean you made a request then?
that is not editing though. or did you do it? how?
whatever: I hope collections are not messed up now. because people trusted in the comments,
and might have added some coins now after the varieties got listed  

I've made a request and it was validated..now is OK...anyone should change their coins by the correct type.

Revival attack - I've just found one of each type today and tony found 3 !

So what's the rarity of these types - are they genuinely rare or are they Numista rare lol !

Hi everyone!
I have the Numista Type 1B, "flat edge" but I don´t understand, is this coin realy rare? Someone can tell me the estimated price of this type?  

Best regards.

Цитата: sferreiraHi everyone!
I have the Numista Type 1B, "flat edge" but I don´t understand, is this coin realy rare? Someone can tell me the estimated price of this type?  

Best regards.

Hi!
I've just found one Numista type 2A among 7 coins (the 6 others are type 1A flat and wire edges) !
I've never been so lucky to find "very rare" coins, so I doubt the rarity estimation of these coins is really true...

Best regards

It's not that rare - I think it's about 10% of the total mintage so that is why they are rare and very rare. I have a few of each type; more like scarce...