Different wiper arm length?

[Jonas_N]

Just installed my restored wiper linkage, but when i was going to put on the wiper arms I noticed that they were different in length.
One arm was marked "15" and the other "15B".

Should the 15B be on the passenger or driver side?
(Or do I have the wrong arms?)

[krops cars]

I did not notice this.

[Jonas_N]

Yeah, I cannot find any info on this when googling.
Also, the ones for sale that fits mopars always has the 15B marking.

Maybe someone just swapped one wiper arm on my car.
Will put the 15b on the drivers side until I find more info.

[birdsandbees]

Just checked all of mine... Bee = both 15B, Bird = Both 15B.. all OE. Possibly a shift or manufacter stamp difference, that is if they are both exactly the same length and bend angles.

[Alaskan_TA]

Anco & Trico were both wiper suppliers.

My Valiant & other A body arms I have here are marked A.

My Coronet is marked 15B. (15" is the length of the arm from pivot to far end)

Both cars are 1970 models.

[Alaskan_TA]

I walked out & checked the Sport Satellite (1970 again) its arms are a bit longer & are just stamped 16 for 16" arms.

The four doors did have taller windshields though too.

[Jonas_N]

Thanks guys.
Here is a pic of mine: