@Jen ***********
They made me have both in Samut Prakan. I had my USA social security letter, notarized by the US embassy in Bangkok and had 2 years of monthly deposit from my US bank. It didn't fly. I still had to keep my 800,000 baht in the bank for 3 months before my annual renewal of my visa and 3 months after. For the 6 months between, I could let the balance fall to 400,000 baht.
They are stickers for how they interpreted the rules.