Then it's not a Flea bridge drT, look where the strings are in relation to the holes where the blanking screws are on the OPs pictures. You can see the bridge is set closer the control plate to compensate.
Both the trans bridge and flea bridge ran concurrently and a mute kit could be purchased to fit a trans bridge, NOT TO BE USED ON A FLEA BRIDGE, the mute pads would miss the strings.
musicmanbass.org/mycustompage0061.htm
Gav's site is hit and miss at the moment but its all explained here, there is no "earlier version" with mutes, if you've got mutes you've got a trans bridge.