Here is an antique silver plated julep strainer marked “N. F. Silver Co. 1877”. N. F. stands for Niagara Falls. It measures 5 and 3/4ths inches long and 2 and 5/8ths inches wide.
It has a swirl design in the bowl and a clover cut out on the handle.
The clover cut-out or “Clover” pattern julep strainer is known to have existed as early as 1886 as it was featured in the 1886-87 Meriden Britannia catalog.
Please see my blog post “The Victorian Bar” to read more about this:
This strainer is available for sale here at my Etsy shop: