The small temple in Samutsongkram, west of Bangkok.
The speciality of the painting in this temple are, first painted on wooden wall and second not paint inside temple but inside a hall for keeping the scripture.
My personal opinion, the style and brushing seem like artist during King Rama the Third of Bangkok which is around 200 years ago.
ภาพเขียนฝาผนังบนผนังไม้ ภายในหอไตร วัดบางแคใหญ่ สมุทรสงคราม