Terming the incident as serious, UP CM Yogi Adityanath has ordered a probe.
Twelve stamps each of Rajan and Bajrangi were printed under the 'My Stamp' scheme, which was launched by the department a few years back, an official added.
Gangster-turned-politician Mukhtar Ansari's brother alleged on Wednesday that inhuman treatment was given to him while being transferred to Banda jail from Punjab, saying it could have been better had he been shot dead at a road crossing.
Three prisoners, including a member of Bahujan Samaj Party MLA Mukhtar Ansari's gang, were shot dead inside the Chitrakoot district jail on Friday after which the Uttar Pradesh government suspended two jail officials, police said.
Anurag Singh and Rupesh Singh, members of Munna Bajrangi gang, were killed near Chandan cinema in suburban Juhu.
The court said had the prosecution witnesses not turned hostile, the outcome of the trial would have been different.
Controversial Uttar Pradesh legislator Mukhtar Ansari was on Saturday released on custody parole from Central Jail in Agra for a day to campaign in Lok Sabha election.
The turnout for these seats was 57.92 per cent in the last assembly polls in 2012.