There have been silver wire-basket tea strainers that have a handle that detaches , which was/is another unanswered speculation (about any 'wear marks') for this item .
Another thing that might be missing (wear marks , again) is a stand , as in image below .
Thomas Sullivan , an American tea-dealer , in an attempt to save some money , decided to ship tea samples in little silk bags (instead of in the pricey tins) , in 1908 .
Since that time , the 18th through early 20th century production & popularity 'craze' abated itself , in favor of the tea-bag .
Many producers in Asia , S. America & the Middle-East produced tea strainers through this time period as 'collectable items' & there were scads of novel-motif/designed strainers .
I had a little one that was a doormouse (after "Alice in Wonderland") .
After really considering the size of the OPs' item , my money is on it being a tea-pot (spout) strainer (hand-held) .