Crossbar ID Help

Looking for help identifying this dual crossbar with no markings. Leaning towards Dominion Auto but was hoping to confirm.

 

[Night Patrolman]

Well, since no one has responded yet, I'm going to throw in my input: I'm no expert on Dominion Auto crossbars, but the double-bar design of this one reminds me of the Unity Unirack.

 

[stansdds]

It does resemble the Unity Uni-rack, but Unity used round tube for the bars and the mounting feet were curved, not angular.

 

[AuroraBorealis]

Like Night Patrolman, I'm not an expert either, but would lean more towards a Dominion Auto bar based on internet pictures (see below). Depending on the province or city, there are configurations showing two beacons with a speaker/searchlight in the middle or a beacon in the middle with alternating flashers on the ends (which would explain the middle mounting plate). The main indication to me are the square mounting bars.

https://flic.kr/p/9AjWpL

 

[JNav]

I was told that the DA bars were more bulky and had square mounting plates. Someone suggested it may be a Dietz bar. The base plates are 8.5” in diameter so those do match the 7-40 bases. Thanks for helping me try to figure this out. Hard to believe I can’t get a definitive identification.

 

[dmathieu]

It almost looks like something NWLEE in Oregon would have put out.
Just a guess.