Hi,
1. UC0 Bank, it's 'confirmed' and based on my personal dealing with the bank.
2. Again, it's 'confirmed' that PNB and SBI do not entertain any application for certificate/diploma.
**I can also conclude (but NOT sure) that all 'major' banks like UBI, B0B etc do not entertain any such application for certificate/diploma. Better if you try in low profile banks like Dena bank, Punjab&Sind Bank, OBC etc (again, NOT sure of these banks).