I would like your opinions on this brass 1943 threepence possible error please

I would like your opinions on this brass 1943 threepence possible error, I have a large quantity of these to search through but this popped up Im new and still learning Im obsessed probably like many with error coins for my collection and not financial gain so your opinions would be greatly appreciated, My microscope hasnt got a zoom feature to picture the whole coin but I will upload some later.

 

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They look like small lamination issues.

 

Thanks i will do some research on lamination errors then I think its a keeper ? whats the best source for a list of errors and possibly which Minting company where the worst offenders ? (soho Birmingham i think ha )
Cheers for your reply

 

I don't know much about British mints.
if you are looking for a good reference on errors, this is a really good one:
http://www.error-ref.com/

 

Cheers