Costa Rica. 50 Colones 1974, Green Turtles (Chelonia mydas), Series: Wildlife Conservation, KM 200a, mintage of 11000 pcs, Silver 38,6 mm, weight 28,28 g. .500, Condition Proof

Costa Rica 2 Colones 1968, KM 187.2, Cu-Ni 32 mm, Condition UNC

Costa Rica 25 Centavos 1865, KM 106, Silver 24 mm, Weight 6,25 g. .750, Condition F/VF, grey patina, scarce

Costa Rica. 100 Colones 1974, Manatee, series: Conservation, KM 201a, Silver 42 mm, weight 35 g. .925, mintage 11000 pcs, Condition Proof

Costa Rica. 50 Centimos 1923, KM 159, counterstamped on 25 Centavos 1890 HEATON KM 130, Silver 25 mm, weight 6,20 g. .750, Condition VF

Costa Rica, Copper-Nickel pattern 1 centavo 1892 ("1 CENTAVO"), KM Pn6, Cu-Ni 20 mm, Condition NGC SP 66 Cameo, very rare trial struck in Cu-Ni in perefct condition
The only and highest grade for this type of coin in  NGC.

Costa Rica. 5 Centavos 1905, KM 145, Silver 15 mm, weight 0,98 g. .900, Condition aXF, nice patina

Costa Rica. 50 Colones 1974, Green Turtles (Chelonia mydas), Series: Wildlife Conservation, KM 200, mintage of 7599 pcs, Silver 38,6 mm, weight 25,55 g. .500, Condition aUNC

Costa Rica, 25 Centimos 1948, KM 175, Cu-Ni 23 mm, Condition BU, patina

Costa Rica. 100 Colones 1974, Manatee (Trichechus), Series: Wildlife Conservation, KM 201a, mintage of 11000 pcs, Silver 42 mm, weight 35,0 g. .500, Condition Proof

Costa Rica 25 Centimos 1948, KM 175, Cu-Ni 23 mm, Condition UNC, patina