[HkCHUCK]

Here is a pic of a 4 position selector. I have the other ones but will have to take
pics of them.

 

[HkCHUCK]

The one above is of a Navy (0-1-F) ambi selector.

 

[HkCHUCK]

The pic above is of a 0-1-2 or 3 selector.

 

[HkCHUCK]

The pic above is of the S-F selector.

 

[HkCHUCK]

There are actually 4 versions. 2(SF), 3(Navy), 3(Burst), 4(Burst). I am fairly certain your picture is 3(Navy). @HkCHUCK can you please confirm?

Sorry, could not see the pics clearly to tell but hopefully the pics I posted will allow jdha777 to tell
which selector he has.
Chuck

 

[HkCHUCK]

@HkCHUCK many thanks for the quick replies with photos.

Based on your info and the number of detents that I see on my lever, I believe I have an extended left SF lever.
View attachment 300053

Looks like an S-F to me.