If it is properly translated wouldn't it say "stamp of the union union council" on it. Even the bits that were left blank and not completed should have the adjacent printed text translated.
I am concerned because the bits that could be missing are her dowry/dower agreement and any agreements about divorce and subsequent wives.
Singlemom - you are using the word "guardian" but as far as I am aware it does not have to be your father or parental guardian. I am sure that the term is vakil & this person would represent you - something like a solicitor would if you signed a contract - someone with your best interests in mind. I think that the word means lawyer - although this may not be an exact translation of the meaning or equivalent in English.
I have never seen a Nikah without some amount of dowry being mentioned - I have seen lots. I thought that it was a requirement for the Nikah to be valid for a woman to have a dowry - that is her own property that she gets on marriage.
'It must be stated that the dower or consideration for marriage is an essential ingredient of a valid marriage in Islam. The original nikahnama and the entries thereof do tend to presume that no dower amount was fixed, as it was an exchange marriage. An exchange marriage may be a consideration for the parents of the spouse but in order to constitute a valid marriage the dower amount or any other valid consideration in lieu of the marriage has to be fixed, offered and accepted by the spouses.. Marriage of a relative of a spouse with some other, is by itself not a valid consideration for his or her own marriage.' (P. 1910, para 3)
Case summaries from the courts in Pakistan from SOAS
How long have you & your husband/claimed husband been separated?
When did he come to the UK on the spouse visa?
You said that he has not seen his child for 4 years, this seems strange.
Maybe it is time for you to get some proper family law advice Singlemom!!
Good luck with your dilemma. Please remember that you cannot force the Home Office to send him back to Pakistan.
Regards
PP