Hi, Sorry if this is the wrong place to post this, but it should at least be a diversion from the more serious stuff. Not even sure if "symbol" is the correct name. I saw the pictured symbol on a windowsill in a church (Teddington, Glos). Appeared to be fairly old - more than 50 years, to judge by the "weathering" (it was actually inside). It reminds me of something (apart from a spider's web) - wifey reckons representation of Fibonacci series but I'm not sure. TIA Nick Michell.