If you don't know it's there, you'll never know it's there. But a little water and a datasheet description reveals it :)
From the NGS Datasheet: (
visit link)
"KK0360 DESIGNATION - W 1
KK0360 PID - KK0360
KK0360 STATE/COUNTY- CO/DENVER
KK0360 USGS QUAD - ENGLEWOOD (1984)
KK0360
KK0360 *CURRENT SURVEY CONTROL
KK0360 ___________________________________________________________________
KK0360* NAD 83(1986)-39 44 18. (N) 104 58 59. (W) SCALED
KK0360* NAVD 88- 1609.486 (meters) 5280.46 (feet) POSTED
KK0360 ___________________________________________________________________
KK0360
KK0360_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
KK0360
KK0360 HISTORY - Date Condition Recov. By
KK0360 HISTORY - UNK MONUMENTED USGS
KK0360 HISTORY - 1939 GOOD NGS
KK0360
KK0360 STATION DESCRIPTION
KK0360
KK0360''DESCRIBED BY NATIONAL GEODETIC SURVEY 1939
KK0360''AT DENVER.
KK0360''AT DENVER, DENVER COUNTY, AT THE EAST ENTRANCE TO THE STATE
KK0360''CAPITOL BUILDING, AND AT THE SOUTH END OF THE STEPS. THE TOP
KK0360''OF A GRANITE PEDESTAL IN WHICH ARE CUT THE LETTERS USBM.
KK0360''NOTE-- THIS MARK WAS PREVIOUSLY PUBLISHED AND DESIGNATED AS
KK0360''BM (USGS) = W 1
KK0360
KK0360 STATION RECOVERY (2004)
KK0360
KK0360'RECOVERY NOTE BY GEOCACHING 2004 (BMC)
KK0360'MARK RECOVERED IN GOOD CONDITION.
KK0360
KK0360 STATION RECOVERY (2006)
KK0360
KK0360'RECOVERY NOTE BY US POWER SQUADRON 2006
KK0360'RECOVERED IN GOOD CONDITION.
KK0360
KK0360 STATION RECOVERY (2007)
KK0360
KK0360'RECOVERY NOTE BY GEOCACHING 2007 (TFW)
KK0360'RECOVERED AS DESCRIBED
KK0360
KK0360 STATION RECOVERY (2009)
KK0360
KK0360'RECOVERY NOTE BY GEOCACHING 2009 (LPC)
KK0360'RECOVERED IN GOOD CONDITION.
KK0360
KK0360 STATION RECOVERY (2014)
KK0360
KK0360'RECOVERY NOTE BY GEOCACHING 2014 (KEN)
KK0360'RECOVERED IN GOOD CONDITION."