Date of Issue: 28 February 2026
Post Office: Thiruvananthapuram GPO
Pincode: 695001
Circle: Kerala
Special Cancellation: National Science Day
Date of Issue: 28 February 2026
Post Office: Ernakulam HPO
Pincode: 682011
Circle: Kerala
Special Cancellation: National Science Day
Date of Issue: 28 February 2026
Post Office: Thrissur HPO
Pincode: 680001
Circle: Kerala
Special Cancellation: National Science Day
Date of Issue: 28 February 2026
Post Office: Calicut HPO
Pincode: 673001
Circle: Kerala
Special Cancellation: National Science Day
