Restoration attempt-any advice ?

 For quite sometime I had been working hard to restore six following pens. But the damaged plating on the metal ares are not possible to restore, particularly on the Aluminum based metal 
caps and other parts like clips. By hand polish this is the maximum extent that could be restored as shown in the photos.   I wish a spray on plating like paint or a brush applicable gold emulsion 
were available- but no idea where to look and how costly. Requseting viewrs with jewellery knowledge to kindly advise.

The pens are : Whitefeather 608, Plato 222, Wilson Commander, Hero 240, Pilot Japan gold nib , Optimat- in same order as the photos.

Polish job- ASA Porus pen

The ASA Porus Pen- greenish blue ebonite , after rouge polish

Polish Job- Gama Popular

This is Gama popular pen after polish.

Polish job on ASA I Will pen.

This is ASA I will pen after polish

Polish job- ASA Daily

Tried to polish all my ASA sourced ebonite pens with jewellers rouge and cotton. Result is good , the surfaces have developed a natural lusture and looking good. Here are some photos. Thanks for watching.

Optimat 75 aerofil small pen

Good Morning all. I am restoring a tiny hooded nib pen, sharing its photo compared with a standard sized Hero 100 ! Hope you like it.

ID an old pen- need help

I need help to ID an old pen. Name printed at the base of the cap OPTIMAT. Marking on the nib: Wing Flow USA. No ther detail avaailable. Photo of parts may help.