Your Complete Satisfaction Is Our Aim.. Monumental Masons - Waterloo Corner, SA . Service: Lettering, Restorations. Product: Headstones, Memorials, Plaques, Statuary. Hours of Operation: Flexible Hours, Open Monday - Friday. Payment Method: Cash, Cheques, EFT, EFTPOS, Money Order. Service Option: By Appointment, Mobile Service. Material: Bronze, Lead