We have this inkweell from several time and came with a big set of things Sergio bought to some one that was leaving Argentina. It is very funny and I found two similar ones on the web
http://www.ebay.com/itm/Rare-old-bronze-nickel-plated-corn-shape-inkwell-20-cm-x-7-cm-/141072073644
https://www.the-saleroom.com/en-gb/auction-catalogues/hannams-auctioneers/catalogue-id-srhan10021/lot-5685f887-2fcd-4153-bd43-a5ee00d5aa3d
so it was not so uncommon..... Thanks for looking and every commentary is wellcome.