Venezuela Currency Control Censorship (?)

The cover shown in the attached scan has a handstamp of the National Comptroller (or Controller) General, Control Office. I have found no record of civil censorship in Venezuela during WWII. Unfortunately there is no collector organization devoted to Venezuelan philately outside of Caracas, and the link that I have to their website is down.
What I see here strongly suggests currency control. The cover is from a private person to a health department in the US, probably requesting a document for which there would have been a fee. The handstamp is applied over the flap, suggesting that the cover was submitted open to the Controller General's office where it was examined, sealed and stamped before being allowed into the mails. The presence of 2 examiner numbers on the US resealing tape suggests that when the cover was opened in Miami, something of value was found to be enclosed.
Beyond that (and this is perhaps a bit of a stretch), is the appearance of "Controle" in French and Greek censor devices (the latter specifically dealing with currency control), suggesting that the Sala de Control was doing more than auditing the governmental accounts.
Anyone who can shed light on any of this, or who has other examples of this or similar markings, is encouraged to post a reply here.