Stamps Category Science

Scott#1362, exchange 0.20 usd.
Francisco Javier Jiménez Frías
Scott#1347, exchange 0.20 usd.
Francisco Javier Jiménez Frías
Scott#2438 exchange 0.65 usd, 1st.
Francisco Javier Jiménez Frías
Progress in Electronics - Progress in Electronics - By Forest Audions -
Herman Cudris Castañeda
Scott#917 exchange 0.60 usd, 20 rupees 1988
Francisco Javier Jiménez Frías
Scott#985 exchange 1.25 usd, 1 rupee 1982
Francisco Javier Jiménez Frías
1861 - Minerals
Manuel Briones
1780 - Minerals
Manuel Briones
1071b - Minerals
Manuel Briones
1071a - Minerals
Manuel Briones