ok, there are actually five, sure..
though the last two seem to be closer together (one is the one doubling as survey point if that helps)
https://www.mapillary.com/app/?pKey=737102873633903&focus=photo

I say this as I also don't see one at the start of the white wall / after the door
https://www.mapillary.com/app/?pKey=1767293706788330&focus=photo