Need to make sure i have correct paperwork before i visit bangkok.. Does anyone have pics of these 2 certificates please?

I've never heard of a "Kor 3 Kor 4" document.

Suspect he means Kor Ror 2 and Kor Ror 3 (ledger entry of marriage and marriage certificate) that most immigration offices now want for Thai Wife extension of stay. If you married here within the last decade or so you likely got both but if longer ago probably only the Kor Ror 3 certificate. You can obtain a current copy of the KR2 from the district office that married you or if done in last decade or so from any office as they are being put into computer system.

One post to off-site land ownership documents removed - poster was asking about non immigrant change to O visa documents which suspect is marriage proof.

Example of KR.3: https://picasaweb.go...feat=directlink

Example of KR.2 (one page): https://picasaweb.go...feat=directlink

Example of KR.2 (two pages): https://picasaweb.go...feat=directlink and https://picasaweb.go...feat=directlink

Example of KR.3: https://picasaweb.go...feat=directlink

Example of KR.2 (one page): https://picasaweb.go...feat=directlink

Example of KR.2 (two pages): https://picasaweb.go...feat=directlink and https://picasaweb.go...feat=directlink

Thank you