Never seen one of these before.

[maverick]

I found this in one of my boxes last night, looks like 2 coins put together. Again, yes, I could look it up, but what fun would that be. HH, Maverick.

 

[sagittarius98]

I've seen the design before on a early "50's Hong Kong coin, so it has been in use for a while. It does, as you say, look like two coins sandwiched together.

Rascal

The design was in use since when QEII ascended to the throne.

For the OP- 1960-KN Hong Kong 1 dollar- worth $1.75 in XF.