Does anyone recognize these Coast Artillery pieces?

 

The first two have a standard set of CA branch insignia with a A on each side and a V at the bottom. 5th Anti-Aircraft?

 

 

Not sure what the next one is. It's about an inch and a half tall. No hallmarks. Sweetheart?

One of the AAV badges is hallmarked STERLING. The other has no markings.

Did you ever find out the origin of the AA with V under crossed cannons? I have read a couple different posts with the V designating victory, another with the battery number, and one even questioning if it stood for veterinary (unlikely).

Possibly bly a state unit with an honorary name like Pennsylvania's First City Troop, or a school/academy.

Thanks for the response. Interesting thought on these insignia. I assumed the V was the anti-aircraft battery number.

1 hour ago, MWDVET said:

Thanks for the response. Interesting thought on these insignia. I assumed the V was the anti-aircraft battery number.

I am pretty certain there has not been a "V" Battery in any Coast Artillery battalion or regiment.

I thought it might represent 5th. Although that would seem unusual to use a Roman numeral in this instance.

54 minutes ago, MWDVET said:

I thought it might represent 5th. Although that would seem unusual to use a Roman numeral in this instance.

Agree on the "V" not meaning 5. I go with it standing for veteran. Possibly part of a state unit's nickname.

Thanks for your thoughts. I have seen both a full size and what appears to be ‘sweetheart’ size pins.  The smaller one was stamped sterling.

Here is another guess to add to the list, ROTC. Some school are branch specific and the V could be for the name of the school.