In 1937, a single stone about the size of a loaf of bread, was found near Casilda Argentina in the Sante Fe province. It was later analyzed and revealed to be an H5 chondrite. Only a small amount of this meteorite has been released into private collections.
Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing a single small fragment like the one shown. Your purchase will include a labeled gemjar for safe storage.
From the Meteoritical Bulletin entry :
DISCOVERY OF THE CASILDA, ARGENTINA, STONY METEORITE
Place of find: Near Casilda, Santa Fe Province, Argentina.
33°6'S, 61°8'W (coordinates of Casilda).
Date of find: 1937
Class and type: Stone. Olivine-bronzite chondrite (H5).
Number of individual specimens: 1
Total weight: 5.25 kg
Circumstances of find: The specimen is in the collection of the Instituto de Geologia de la Fundacion Miguel Lillo, Universidad Nacional de Tucuman, Argentina.
Source: A. J. Toselli and M. de Brodtkorb. 1973. Acta Geologica Lilloana XII, 135-153.