I'm still looking for any official information whatsoever on small Spanish cannon such as those pictured. These smaller weapons seem to have been overlooked by most if not all of the Spanish authors who have produced works on historic Spanish artillery.
The one work which does address them to some extent is Company Fellow Sid Brinckerhoff's SPANISH MILITARY WEAPONS IN COLONIAL AMERICA 1700-1821 (co-authored by Pierce Chamberlain.) However, very little firm data was available to Sid at the time of publication, and very little additional has been uncovered by anyone in the many years since. The precise origins of these widely-distributed, much-varied pieces seems murky at best. This lack of information was one of the reasons behind the founding of SARA (Spanish Artillery Research Associates) by Mike Hardwick and myself.
I update this discussion periodically in the hope that someone, somewhere has found some form of official mention of these pieces, preferably by Spanish military authorities, but lacking that, almost anything would be welcome! Hopefully with the ever-increasing use of the internet, someone in Spain, Latin America, the Philippines, or someone thumbing through a long-ignored Spanish manuscript will stumble on the answers to the specifications, nomenclature, production orders, founders, distribution directives, etc. for these enigmatic weapons.
Photo copyright Springfield Arsenal LLC 2013
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