Yes I have come across quite a few coins with the Lords Prayer engraved on. They seem to come in all sizes and denominations. I have heard The theory that some were made for soldiers to take with them during the War. As to what value, as with lots of engraved coins, its really sentimenal value or just what someone is willing to pay. The other side of the coin wouldn't really be of much interest to straight forward collectors as its quite poor. Just as a side line you might find this link interesting which explains that with todays technology the Lord Prayer can now be engraved onto the size of a pin head! here But welcome to the forum!