heel plate

I have recently started metal detecting and I found me first heel plate. After looking online, I can’t seam to find a time period for it. I was wondering if anyone hear has a date range for it. As I said I have only been doing this for about 2 months and don’t know where to look for answer...

Hi! I got out on Saturday for a day or hunting with one of my very good friends--NJLargeCent. He got permission to the grounds of a log cabin house that dates back to ca 1900--not ancient, but any day with nice weather and good company is a treat. The finds were a bit scarce on this property...