Metal finishing question

Here are the main components of the hardware from the front screen/storm door we are restoring. It polished up quite well, solid brass.
Is this a candidate for an interior/exterior spray laquer, available locally in an aerosol can, to help prolong the finish?
Can't say that I know for certain but whenever I cleaned and polished the brass fittings on my boat I sprayed them with lacquer.
 
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