Could this be our lead to the commercial?
Was searching for ad compilations on Youtube that might have included the Encarnacion Bechaves commercial (but was not noticed by the uploader) and found this one instead (https://www.youtube.com/watch?v=EWRVtWV7Q_E) for a florist called Bechaves Eufloria that is based in Cavite. I don't know but I have a feeling that Bechaves Eufloria may be related to Encarnacion Bechaves (perhaps a sister company; or perhaps both companies are owned by people coming from the same clan) and reaching out to the owner of Bechaves Eufloria might just bring us closer to the surviving copy of the Encarnacion Bechaves Commercial.
Also a side note: The Bechaves Eufloria commercial seems to have paid a bit of homage to the Encarnacion Bechaves commercial (e.g. the solemn music, the close-ups on floral arrangements and a female model getting her own screen time with a bouquet of flowers)
This is the owner of Bechaves Eufloria, btw: https://www.facebook.com/AthenaVaughn07