I am joining northy's one subject April month....I have done it a few times over the years and find it quite the challenge.
This year's item I acquired many years ago...it is old but not really of any use now except for decoration and photography ha ha - I think it has appeared in my project before, I am starting with macro images...I don't think it will be a subject easily recognised to start but may become clearer as I will reveal more in time. https://365project.org/discuss/themes-competitions/44847/one-subject-april
