ThonBuri Buddha Bronze late 18th c Thailand

Style and posture: Gilded and lacqued Bronze Buddha in Bhumisparsha posture (calling the earth in witness). Its a transition peace between Ayutthaya and Rattanakosin (Bangkok school)
Material: Bronze
Size: 47cm High, 19.5 cm lap (Knee to knee)
Age: late 18th century, Thonburi 
Origin: Thailand
Provenance: Private American collection
Condition: lower part of the throne missing, damage at breast level