Hello JoanW, I noted your response to AG2012’s comments. I think you will need to learn a little new vocabulary. I offer you first “silver standard guarantee mark”. Most nations have their own and often it is pictorial or a combined pictorial numerical mark as some nations have more than one silver standard. I am English and we have a lion standing on nearly 4 legs. This indicates a silver content of at least 925 parts silver per 1000 parts. This is the sterling standard and the “sterling” marked on USA and Canadian flatware indicates the items silver content is 925 parts and sterling is a standard guarantee mark. Some pieces of silver just have 925 marked on them. In some European countries 800 or 830 is marked on items and this shows the items are of a slightly lower silver content.
A series of marks on an item is sometimes called hallmarks but in truth to be called hallmarks they need to include a silver content guarantee mark. The marks on your spoon do not contain a guarantee mark so should be considered as manufacturers marks and the spoon is silver plated or only contains a minimal amount of silver or even no silver at all.
If you have a look at the reference sections of this web site there is most of the information you need to be an informed collector of silver or silver plate.There is possibly more stuff for silver collectors than silver electroplate collectors.
I would just like to add that in the case of silver items perhaps older than 150 years of age guarantee marks can be missing. You needed an informed Governance to run a silver standard scheme.