Hi Rat-tail,
The three Andreas crosses crowned. Amsterdam, 2nd standard of silver or ‘kleine keur’ for 833 fineness, small work (below 30 grams), no date letter, looking at the city mark made around 1703.
Makers' mark malformed, I believe it to be a (Valk-Falcon) for; Claes Valck, registered in Amsterdam 1690-1722. Claes was born in 1669, married Anna Ruwarts in 1691 and living at 'de Boomstraat' in Amsterdam, Claes died in 1722. Claes has been a small worker.
Oel.