>>13552800 (lb)
>>13552811 (lb)
>>13553378 (lb)
>>13553390 (lb)
>>13553427 (lb)
>>13553512 (lb)
371157721
Plausible this could be UTM 3,711,577.21 (12S UTM zone)
If correct, this UTM marker runs parallel along the northern side of West Glendale AVE through Phoenix, AZ.
>SAUCE
> https://www.latlong.net/place/phoenix-az-usa-18409.html
>https://www.latlong.net/lat-long-utm.html
>https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system
>https://pubs.er.usgs.gov/publication/fs07701