Can anyone help me identify these Lucas/Tomco injectors?

[yellow95]

They are black with a green ring. They have the following numbers on them.

D1720AA on the left

621020 on the right

3116 on the back

Please help if you can.

Gary

 

[TTA89]

http://www.gnttype.org/techarea/fuelsystem/injflow.html

I didnt see them listed but I looked over quick.