I am sorry I do not have the time to do it right now, but if you check through the Blackletter fonts in the Script Font ID Guide (Part 3) at http://bowfinprintworks.com/Script03Pg1.html,you may have a good chance to find it if this is a commercial font. (There are some freewares too, but mostly commercial ones, because I have a better chance to be sure of the originators).

Mike,

Thank you for your suggestion. I looked at your guide page, but I could not find the match...

Is this customized...?