Unusual use of Ustasha stationery

After liberation, the communist authorities strictly prohibited occupation symbols, including the Ustasha flag and coat of arms. Therefore, it is very unusual to see a 1942 commemorative stationery with a large Ustasha coat of arms used after the liberation.

Commemorative stationery for the 1942 exhibition of aircraft models sent from Zagreb (22.V.45) to Negotin, Serbia, by military post and censored by the military censor. Unusual use of stationery with Ustasha symbols under the communist regime.

Getting help from AI

I was at a local philatelic meeting today. As always, it was nice to meet fellow philatelists and browse through piles of letters, stationery and stamps. 

The lively event at the meeting.

Among other things, I also found interesting military stationery from the Second World War sent from a 331st Special Work Battalion. 

Military stationery sent from the 331. Compagnia Speciale Lavoratori (= 331st Special Work Battalion).

On the other side of the stationery is written date 12.9.43 and the illegibly written name of the city. I started looking for information about this battalion, but since it is a narrow area and a rare example, I needed help finding something concrete. I could not even decipher the name of the city. So I decided to try the use of artificial intelligence (AI). Below is a conversation between me and an OpenAI chat system that impressed me.

A conversation between me and the OpenAI chat system helped me discover the city from where the stationery was sent.