The purpose of this research is to determine the sites, quantity changes and possible centres of production, use and distribution of delmonas, a detail of Lithuania Minor traditional costume of the 19th and early 20th centuries. The paper contains an examination of examples of extant delmonas, as well as depictions in drawings and photographs kept in Lithuania’s museums and private collections. The analysis covers the data of 82 delmonas and 11 centres of their usage collected during the last 3 years of research. The significance of localization becomes evident in studying the development of delmonas: the change in shape, ornamentation and colors. Examination of the spread of these handiworks helps to determine the traits of delmonas worn (made) in specific areas of Lithuania. Localization is examined in order to establish which hypothesis a usage of delmonas is to be accepted: a limited territory or a wider Klaipėda region spread. As a result of the research some probable production and usage centers were concluded. Key words: delmonas, pocket, museum, exhibits, prevalence, localization, village, municipality, Klaipėda region. DOI: http://dx.doi.org/10.15181/td.v10i0.1038