Looking for four pieces of information here:
(1) Manufacturer and likely decade of manufacture for the jug, the sugarbowl and the coffee pot/warm water pot? Marks on all three are those of the top panel
(2) The teapot has the exact same design patterns as the others except for the lid handle which has a bird motif (eagle?). However, the teapot sports a different set of marks (lower panel). Why is this?
(3) Is this “set” silver or silverplate?
(4) Any ballpark figure on likely value would be appreciated.