The modern Japanese spoons are often available in both sterling silver and silver plate. The sterling spoons are usually marked as "sterling" or silver or sometimes the better quality silver "950" whereas the silverplated variety are unmarked. The finials are usually the same.
Porcelain enameled sterling spoon
embossed sterling spoon with round bowl which contains 3 leaves
I suspect that sets of these spoons exist, although I have never seen a complete set (I have only seen them singly). Since the silver mountings are slightly different, I suspect that the pieces may have different sets available.
left: Mt. Fujiyama (apparently more common)
right: snow scene
Japanese garden scene
This spoon does not have a purity mark on it, therefore we must assume that it is silverplated
It is identified as Toshikane, Japan
The finial is made in the same manner as the sterling ones shown above
other variations of these spoons also exist
Ebisu is the patron God of work and symbolizes fishing and industry
The complete set of these 7 Japanese Gods of Luck may be seen by clicking here
These spoons are also available in both sterling and silver plate.