This is a very nice old decorative 19th Century copper jelly mould.It is marked as shown 28  to one end.It probably dates to the late 1800s /early 1900s.The mould stands 4.5 inches in height,is 5.5 inches across the top and is approx. 6.5 inches across the base.It is in pretty decent used condition with some knocks to the top as shown.
Thanks for viewing and please take a look in my shop for many more interesting old items.