"Barang Tiada Berharga" also dealt with a doctor and his wife, named Pardi and Haereni, who were characterised in a similar manner as Sukartono and Sumartini, while "Lupa" introduced the main character Sukartono.
"Barang Tiada Berharga" juga mempunyai tokoh dokter dan istrinya, yaitu Pardi dan Haereni, yang digambarkan dengan watak yang mirip Sukartono dan Sumartini, sementara "Lupa" memperkenalkan tokoh utama Sukartono.