Hmmm.... gotta polish the plexiglass again
alternative is to get a protector for your watch glass from ebay. This is how it looks on my daytona.
front view: cannot even see the protector even its there.
45 degree view: can see the edge of the protector if u examine closely.
side view: can see the protector clearly. its approx 0,2mm in thickness.
this is made of rubbery material (3M clear sticker) sticker. different from the screen protector we paste on our phone. therefore to apply this on your watch is much more difficult because once the sticker sticks to the glass or if there is dust underneath the protector, u cannot just lift off and readjust or remove dust.
good thing is if u done it correctly and carefully, the result would be very satisfying. due to the material, itself is scratch proof and can absord shock to a degree if impacted