<Tr> <Td> San Lorenzo </Td> <Td> Veracruz </Td> <Td> Colossal Head 7 </Td> <Td> Monument 53 </Td> <Td> 2.7 metres (8.9 ft) </Td> <Td> 1.85 metres (6.1 ft) </Td> <Td> 1.35 metres (4.4 ft) </Td> <Td> 18 </Td> </Tr> <Tr> <Td> San Lorenzo </Td> <Td> Veracruz </Td> <Td> Colossal Head 8 </Td> <Td> Monument 61 </Td> <Td> 2.2 metres (7.2 ft) </Td> <Td> 1.65 metres (5.4 ft) </Td> <Td> 1.6 metres (5.2 ft) </Td> <Td> 13 </Td> </Tr> <Tr> <Td> San Lorenzo </Td> <Td> Veracruz </Td> <Td> Colossal Head 9 </Td> <Td> Monument 66 </Td> <Td> 1.65 metres (5.4 ft) </Td> <Td> 1.36 metres (4.5 ft) </Td> <Td> 1.17 metres (3.8 ft) </Td> <Td> </Td> </Tr> <Tr> <Td> San Lorenzo </Td> <Td> Veracruz </Td> <Td> Colossal Head 10 </Td> <Td> Monument 89 </Td> <Td> 1.8 metres (5.9 ft) </Td> <Td> 1.43 metres (4.7 ft) </Td> <Td> 0.92 metres (3.0 ft) </Td> <Td> 8 </Td> </Tr>

What type of olmec statues were found around 1860 what made these unique