[Collins] Unusual 312B-5 and a question

[W5vhp at aol.com]

Hello to all......
 
I have a question for this group:
 
My 312B-5 has an unusual front panel escutcheon.  The lettering is  "312-B5," 
not the correct 312B-5.  Also, the lettering is quite a bit  smaller than the 
lettering on all of the other escutcheons of my other Collins  pieces.  Is 
this a factory slip-up?  Anyone have a similar  discrepancy?  The lettering 
looks "factory done".  It might be one of  a kind!?  : )
 
Anyone have any thoughts on this?  I have owned this B-5 for a long  time and 
have always wondered about it.  I would enjoy and appreciate any  input about 
this.  I would attach a pic, but the reflector won't accept  attachments.
 
Thanks and 73,
 
Larry    W5VHP