Martin, there’s no point in posting links to images on your own hard drive – it would be very disturbing if we had access to it!
Open a post window and look below at the left for a grey button labelled Browse. Use that to navigate to where your images are on your hard drive and upload them so that we can see them. You may have to fiddle with the size before uploading. If you find that difficult, use the Contact Form using the Image DB Usage category to get in touch with me and I’ll help you out (if I cannot recognise it outright, that is!).
It looks like a veterans’ organisation badge – given the sabers maybe cavalry – which had a post in Harrisburg. Does anybody who knows about such things come up with a more concrete identification… once we stray out of official orders, decorations and medals I get a bit lost!