Good spot! It seems that 2 Corps sign had some variations - eg this Austin K3 at Malo Terminus. http://www.ww2talk.com/forum/attachment.php?attachmentid=43224&stc=1&d=1294403099 Andrew I've never seen the fish swimming uphill before. Wasn't the sign originally introduced with just the wavy brook lines and the fish added later for clarity ? That might explain local variations.