The first is a circa 1740 1/2? Moidor Portuguese Coin Weight used to weight gold coins. Not that the weight is Portuguese, it was for weighing the foriegn coins when trading, to check if the were fake etc..
(You can see the faint letters across the middle - 'MOIDOR' & a 'W' at the base. Above will be the denomination - either a 1 or a 1/2 depending on weight)