Google was absolutely created for occasions like this.  We have an old printer’s woodblock (sourced in the 1980s but certainly dates much earlier) with information readable as “HOO KEE No. 104, Amoy Street, Singapore 1” and then much text in Chinese.  However the HOO KEE name is locked inverse to the other letters, which suggests it might have been wrongly made.  Anyway after much Google searching we tracked down Hoo Kee Bak Chang, and someone’s online Blog entry saying this: (lightly abridged):  “My fave spot for bakchang in Singapore, and which I think still produces the best rendition on the island, is Hoo Kee at the busy Amoy Street Food Centre in Tanjung Pagar … Hoo Kee was started in 1948 by husband-and-wife Chew Hai Chwee and Lim Soek Loo. Its first location was Fu Xing coffeeshop at 104 Amoy Street. It’s currently run by the 3rd-generation of the family …”  As for the block itself, it measures about 10″ x 4-1/2″ x 1″ and is quite heavy.  We’d love for it to get back to that family but first-come, first-served.  Grade: 1