A big one from Pakistan

This envelope is quite large actually, and has stamps on the front and back. Postmarked at the philatelic bureau in Rawalpindi. Twin to neighboring Islamabad. The 2025 souvenir sheet on the right commemorates international women's day. At the top is a 2025 stamp commemorating the five year economic plans launched in 2024 known as URAAN. And on the left is 2026 stamp that commemorates the 25th anniversary of the PARCO Mid-Country Oil Refinery.

More on the back. At the top is a pair of 2025 stamps commemorating the 75 anniversary of diplomatic relations between Pakistan and Sri Lanka. Bottom left is a 2014 stamp commemorating the 2013 100th anniversary of Pakistan's paramilitary police force: the Frontier Constabulary. And bottom right is a 2 rupee Jinnah definitive.