The Rs 500 note that Dr. Randhir Singh is checking is part of the Mahatma Gandhi New Series. The new notes were issued in November 2016 after the Government of India demonetized all Rs 500 and Rs 1000 notes of the older Mahatma Gandhi series.
Guddu and Bablu decide to buy their mother a Banarasi saree. Banarasi sarees are made of finely woven silk and are intricately decorated, often with Mughal-inspired designs. Depending on the intricacy of its designs and patterns, a saree can take from 15 days to a month and sometimes up to six months to complete.
The scene where Guddu and Bablu are stuck in a traffic jam was shot in less than an hour. This was because the street where the traffic jam was staged was available only for a very short time. The street led to the only mosque in the neighborhood and needed to be clear throughout the day to make way for people to access the mosque for prayers.
The scene where Munna and his gang watch a movie was set in Shilpi Talkies, the single-screen cinema theatre in Mirzapur. This scene was actually shot at Navarang cinema in Mumbai. Single-screen theatres were the staple for millions of Indian moviegoers for many years. Various single-screen theatres across the country are considered iconic, with many standing out due to their unique architecture. However, with the advent of multiplex theatres, the business of single-screen theatres declined very fast, and only a handful of them survive around India.
In the scene where Golu is reading a book of poems and Bablu recites poetry to her, Golu is reading a book of poetry by a famous Indian poet, Mahadevi Verma. Mahadevi Verma was born on March 26, 1907, and, in addition to being a poet, was a well-known educationist. She is widely regarded as the "Modern Meera," a reference to Meera Bai, the legendary Hindu mystic poet of the Bhakti movement from the early 16th century. Mahadevi Verma was awarded the Padma Bhushan (India's third-highest civilian award) in 1956 and, posthumously, the Padma Vibhushan (India's second-highest civilian award) in 1988.
The scenes inside the cinema theatre were shot exclusively at night. Navarang cinema, the theatre where these scenes were shot, was running extra shows of the blockbuster film "Tiger Zinda Hai" during the days that the crew shot there. It was not possible for them to cancel or reschedule those shows; hence the crew got access to the theatre only after 12:00 a.m. every night.
In the scene where Sweety talks to Golu about Guddu and Bablu's new job, Golu reads a book called "Chanakya Neeti." Chanakya assisted the first Mauryan emperor, Chandragupta, in his rise to power. He is widely credited for having played an important role in the establishment of the Maurya Empire. Chanakya authored the ancient Indian political treatise, the "Arthashastra." The title "Arthashastra" is often translated to "the science of politics," but the book itself has a much broader scope.
The scene where Munna negotiates the price of opium with Lala was shot at BP Singh's haveli (mansion) in Varanasi. A haveli is a traditional townhouse or mansion in northern India, usually one with historical and architectural significance. The BP Singh haveli is located opposite the historic Ramnagar Fort.