nice ideas Melanie....nothing on these boards is too wacky (take it from the wacky king)
To first disagree with Cat (gosh, is this a first lol ;) ) I think the #74 is quite obvious in the waves. Now....
The face is of course that of Lady Liberty but your Liberty Bridge find is quite intriguing. That darn eagle though. It seems to be a perfect match for the Chrysler gargoyle... unless, is there something "Chrysler" nearby in Pitt?
I have always believed V10 to be leading us to Pitt, especially with the Isle of B = Brunot Island. My only problem was I had it matched w/ P4 since the beginning....low and behold, Sir Egg had to go and ruin that one for me

. But, P4 brings us right back to your points....From early on, I think I would be correct in assuming, everyone here was convinced that P4 was PA (gem in Keystone-state), most leaning towards Philly because of the Lbell (liberty bell) & myself secretly leaning towards Pitt w/ V10. Now that someone else has found themselves in Pitt with this V, maybe we should do a little more digging and find a P (if not P12..but also could be now) for this casque.
Keep the ideas flowing Melanie...no idea is a dumb one (except for some of mine lol )
Thank you for this adventure BP.