Hi Arpita,
The attachment appears to be ok, but if you would require a conclusive evidence better you should contact the concerned official of the issuing office for your records. You get it done over phone or email/post. You should obtain contact details from the employee concerned. Our views cannot be an official document for your purpose.
Now days all payments are made through bank, ask the person to provide bank statement for your verification. Otherwise you contact the HR of the person for your clarification.
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