Date range - early to mid 1800's. Maker / backmark - no marks Bazaar cast. Here is a very nice original uniform button. Listed in good faith and to the best of my knowledge and abilities.
The "Button British Indian Army Madras European Regiment MER 1800's 20mm" would be an excellent fit for collectors or enthusiasts of military history or those interested in the history of the British Army during the 1800s.