GDL direction slab, Beacon Hill [????- ] | Gwulo: Old Hong Kong

GDL direction slab, Beacon Hill [????- ]

Current condition: 
Ruin

Year completed is: Accurate
Condition at last visit: Top face partially damaged, some directions not clear
Date of last visit:
Ref: ROB-01006
Other:

Text on slab:

Waterloo Rd Bn HQ
L 70
L 73
L 74
Catchment L 6-
PB 222 - 219 L 72 - 75 60 59

Comments

Passers-by won't step on it accidentally anymore 

P_20200414_MarkerStone_largest.jpg
P_20200414_MarkerStone_largest.jpg, by H.Lo

L70->"TO ???"

L73->L7"5"

PB222-219 L72-75 60 59->PB222-219 L72-"69" 60 59

Not 100% sure