A love Affair, or Sorts

I am drawn to the Second Republic's República Española overprinted Alfonso XIII definitive series. They are a good look at the transition from monarchy to Republic played out via stamps. Interesting enough but the covers are pretty reasonable and somewhat plentiful. I will be posting them from time to time.

This registered and certified cover dated 12/3/1931 from oil exporter “Laesa” in Barcelona to Paris is franked with 5 República Española overprinted Alfonso XIII Vaquer definitives.

Two 5c. (Edifil #544), two 15c. (Edifil #596), and one 40c. (Edifil #600). The total franking is 80c. This franking covers the initial rate for business papers up to 250p in value and 50grams of weight (10c.), the 30c. registration fee for value up to 300 gold francs, and 40c. for international medical/samples and/or papers up to 20grams which includes the cost of certification.

The reverse as you can see has 5 wax seals with the impression "Laesa" with a DuPont oval hand stamp.  I assume, safely, of a relationship between the two. Functio laesa is a term used in medicine to refer to a loss of function which I assume improving said function loss is the purpose of Laesa products.

The receiver was the Société Anonyme de Vilbis. This is a limited liability firm that I believe is connected to or with the DeVilbiss Corporation which has its roots beginning in 1888 in Toledo, OH. Dr. Allen DeVilbiss developed a spray atomizer which made spraying medicines to patients throats much easier. Which probably utilized some sort of oil or oils.

Here is an image from an invoice from the war from Laesa (borrowed from Google).