Brass Grease Fittings?

[QGolden]

Working from the back to the front on my Speedster A project, I have come to the Front Axle. Yesterday I pulled it, it tore it down. Cleaning off decades of grease, and paint, I have found Brass or Bronze grease fittings on the front end. I Googled for them and found nothing. Were they common?

 

[Tom Wesenberg]

I've only seen steel grease zerks, except for the brass one on the rear of the water pump.

 

[MikeMort]

My 1930 Tudor has brass fittings on the front spring perches.

 

[QGolden]

I shoulda' been more clear, these are on the Shackles, they sure look nice.