GB Victoria Penny Red With Top Character And Word Variety???

Hi,I have found something very interesting in my stamp cover collection.I have an old GB letter cover with an imperforated penny red used stamp on it for more than 100 years old,the most interesting part is the stamp has an extra top part(an extra "C" character and "one penny" wording)it is so obviously to see the top part clearly.I think this is something very special and rare happend on the old penny red stamp,correct me if im wrong.I went to ebay there and seen more than 1000 of penny red stamps,none of them is exactly same like this,some of the penny red stamps with the top parts but just half of it and not so obvious like this.I have a few question below:

1.In your opinion,is this considered as variety?
2.If it is a variety stamp,does it has any special value and highly demand by collector?
3.Have you ever seen any penny black,blue or red stamp with obvious top part?
4.Do you think this stamp with the top part portion is certainly RARE?

Please answer all my questions on above,I will apprieiciate your answer and help very very much.Thank you for viewing.

Just an over-generously cut specimen, with the bottom of the stamp above (C-G)having been taken as well. I doubt it's anything rare.

I would agree with WpgLwr. It's simply miscut by the user, not a printing problem. While it is interesting, it is neither rare nor necessarily desirable except by some collectors who find it overly interesting.

More important than one or two wide margins is having 4 full margins. Your copy is what would be considered 3 1/2 margins. The catalog value for the imperforate penny reds is for a full 4-margin stamp. Anything short of 4 full margins would be considered a flaw.

WpgLwr has it correct, just a mistake long ago with a pair of scissors.

Miko, if you are interested in Victorian issues of Great Britain may I recommend the Stanley Gibbons specialized catalog of the Victorian era stamps. It has a wealth of detailed information on each issue. You should be able to find a used catalog on Amazon, although I have not looked. I did get a used specialized catalog of the four kings (Edward VII, George V, Edward VIII and George VI) on Amazon for a reasonable price.

Agree with you all.Thank for all your help.Firstly,I thought this stamp was cut by the printer but not the user and now realized its a user miscut,alittle bit disappionted.Anyway,Im fine.

Rohumpy,I will look into the SG specialist catalog of four kings of great britain.