The organ is ca. 1890. Sellers ask anywhere from $75 to $1k. Not a single one has sold on e-bay recently. Most are in the $2-300 price range, and those aren't selling either.
The "Tiffany" lamps are reproductions, probably worth $50 - $250.
The breakfront or buffet looks like a mid 20th century piece given the retro Art Nouveau treatment. Assuming, however, that it is "real, " we'll need more photos.
So that 's a few of them.