It is often mentioned that there were three men involved: Alvear, Monteagudo, and Vieytes, but it is known that a few years before, President Bernardino Rivadavia asked the Peruvian Antonio Isidoro Castro to create an Argentine coat of arms; however, the two schemes have never been found.
Namun sering disebutkan bahwa ada tiga orang yang terlibat dalam pembuatan lambang negara Argentina: Alvear, Monteagudo, dan Vieytes, tetapi diketahui bahwa beberapa tahun sebelumnya, Presiden Bernardino Rivadavia meminta Peru Antonio Isidoro Castro untuk membuat lambang negara Argentina; namun hasil rancangannya belum ditemukan.