Hubcap Identification & Removal/Replacement

[Hoogah]

Just wondering about the mix of hubcaps I have on my Canadian built, Australian assembled phaeton. Everything from the running boards up is dated June 1928 (on the firewall). The previous owner jacked the car up and rolled a complete running USA-import '28-29 chassis (a rodder's cast-off) under it, mainly to take advantage of the updated brake system and a stronger engine.

So, the four 28-29 (US) wheels on the ground have hubcaps with a flatter profile and the Ford script with a "short" F (top row in photo). The spare (Canadian) wheel that came with the car was of the E28 (AR) type, and has a hubcap with a more dome shaped profile and the Ford script has a long flowing F that extends over the other letters (bottom row in photo).

Do these hubcaps accurately represent differences between Canadan and US hubcaps produced in 28-29, or the design change that occurred over the 1928 - 29 period?

Or are they all perhaps after-market repros made with varying degrees of authenticity?

I'm in the process of painting a later spare wheel to match the four on the road, and will have to remove the hubcap from the old spare and install it on the new spare. Is the removal/replacement process just a matter of bending each of the little tabs accessed from the back of the wheel? Are there any tricks I should know about?