Victorian era Brass door plate(s)...?

[grogmug]

I found these on the original door(s) at an old store, built sometime in the 1800's I believe that has been abandoned for several years. The plates are in great condition and have a lot of good detail on them. I just wanted to know when they were made, how they were made, what the possible value is, do people collect/buy them? I just basically want to know everything I can about them, because they are beautiful pieces of work.
Thanks in advance!

 

[grogmug]

So do you know exactly what era these are from? I just want to know how old they are, and what the six digit number on the back of the plate means?

 

[CMDiamonddawg]

Like the old hardware ! Nice finds 8) 8)

 

[grogmug]

I appreciate the responses...anyone interested in the pieces?! lol...any more info would be greatly appreciated. I tried detecting the old store/house, but found nothing but trash with my ACE250.