It has spring-loaded arms that hold cigarettes in place so they wont move around inside the case.
Incidentally it was 4 sen (0.04 yen) per a 10-pack when it was put on the market in 1906
Reynolds Tobacco Company for Winston cigarettes The Houston Press (weekly) November 5, 1997 My buns might not be steel, but my butts all tobaccoNo BULL Advertisement by R.J
DOI: [10] Marketing Little Cigars and Cigarillos: Advertising, Price, and Associations With Neighborhood Demographics, Cantrell et al, American Journal of Public Health, published October 2013
(8, 9, 10) In fact, most cancer centers now encourage mind-body practices for those undergoing treatment as it is now recognized that uncontrolled stress has a negative impact on our system and prevents optimal healing