Original LP's pressed before Fania was sold at the end of the 70's has a superior quality and they were much thicker. Until 1974-75, the paper jackets were printed with pictures of Fania's catalog on a light blueish background. Album Covers were also thicker. A lot of albums were released with gatefold covers.
As the eighties arrived (with Música Latina as the new owner), quality went down rapidly. Suddenly, US pressings weren't available. So they start pressing in Venezuela and sending it to US, Puerto Rico and other countries. Colombia, Ecuador and Peru were pressing too, but for their local demand with local labels. Venezuelan pressings were much lighter. Their covers were made with very thin cardboard and gatefold covers dissapeared (they were only printed as a single cover). All pressings from Venezuela have a very distintive label printed with copyright codes and the phrase "El Disco Es Cultura". Sound quality on these LP's were good for some albums and pretty bad for others; a proof that maybe the masters were being starting their deterioration due a faulty care. a nice bunch of masters were damaged or ruined during these years.
When Masucci bought Fania back at the end of the 80's, CD releases began. First releases were made in Europe to get back quality pressings (Siembra first CD release was pressed in Austria) but the back cover art templates were very basic (just plain black and white lettering) and only the front cover was available (from 1989 to 2005). Several front covers were modified to fit the smaller size of the jewel cases.
In 2006, EMusica brought back original art covers, additional liner notes, photos and full credits.