M0ost likely male Caltoris malaya.
The specimen is rather worn. There is a quadrate yellow spot 3 visble.
What appears to be a cluster of large spots in the FW cell are artifacts, injury marks.
The underside is quite dark suggesting C. cahira.

C. cormasa :FW spots yellowish; Underside HW deep reddish tone; antenna with pale area.
http://2.bp.blogspot.com/-TjKxWVHrQm...herHern_01.jpg

C. cahira: FW spots whitish; UNderside dark brown ; antenna with pale area.
https://www.thaibutterflies.com/wp-c...ris-cahira.jpg

Caltoris malaya ;FW spots yellowish typically no cellspot Un dark rusty brown in male & more ochreous in the female. antenna with obscure pale area.
http://3.bp.blogspot.com/-HDv3sxxpr5...SwiftCombo.jpg
https://1.bp.blogspot.com/-sEtiy2_aX...M_adult_02.jpg
https://1.bp.blogspot.com/-m1O18RS0-...M_adult_01.jpg
https://4.bp.blogspot.com/-j1Pq5mDim...M_adult_06.jpg

TL Seow: Cheers.