One easy way to rake in the silver coins is to increase your luck rating. By using luck increasing items, such as: Luck Ring, Lemina's Purse, and Safety Helmet, there are others as well.
Jean's Bromide 2 - Dancing Queen
Found at Illusion Woods, the girl who guards the exit of the forest has it.
Jessica's Bromide
Land Ho!: Found at Meribia, in the bar, one of the men have it.
Lemina's Bromide 1 - Sunset Breeze
Found at Vane, in a treasure chest in the Library
Lemina's Bromide 2 - Seaside Stroll
Found at Meribia, in the barrels in Ramus' shop.
Lemina's Bromide 3 - Midnight Appraisal
Found at Meribia, keep talking to Ramus' grandpa and he'll give it to you.
Lucia's Bromide 1
Staring at the Sky: Found at Larpa, the man that stands around his house has it.
Mia's Bromide - Warm Tea, Good Read
Found at Transmission Springs, the bromide collector has it.