「古い首都高の標識」というと、
https://goo.gl/maps/mVgoVoUPfMUqNRVW8
https://goo.gl/maps/oYMFRX1d18kWWGbc8
https://goo.gl/maps/c3XqiDHvADrr6hJCA
https://goo.gl/maps/nxq4k5kqmAkr3Nk98
あたりが思い浮かぶが