Spitfire XiX & XIV Prop & Spinner- need help!

Hello!
Is it possible that there were two types of propellers used on Spitfire XIX (also XIV and XVIII) ?
I have made such observation , that on “wartime” planes prop blades had narrower tips. On “post war” tips are wider and have more “brutally” look- just like on contemporary Hoffman’s replacements.
It is rather not an effect of optical illusion and complex nature of airscrew geometry, especially when viewed from various angles, I think.
Of course (excuse my ignorance) “wartime” and “post war” terms are very conventional, and results from the scant reference material at my disposal.
What types (and diameters) of 5-bladed airscrew were on use on these Spitfire models?
Also, I observed that two types of spinners were used:
-one with 5-locks , each just forward blades, on front segment of spinner
-second , with 10 locks located in pairs between blades ( analogically to Mk.IX).
Did exist any rules of use, eg. on aircraft from particular batches etc..?

Excuse my poor English!
Sincerely
FzJgr.