Philip II Of Macedon Coin?

I suppose I could try to clean it. To me it already looks like it's so worn it couldn't possibly need any cleaning? I know it is hard to see. Those were the best photos I could take.

Do you think it could be Philip II of Macedon?

It does appear to be Philip II.
Pish your link to Wildwinds isn't working.

Pishpash is correct on the reference. It is definetely Philip II of Macedonia. I specilise in Macedonian coinage so have looked at all the different types from all the kings. No other king produced a coin exactly like this one however if you look at Kassanders units he produced some with the horse walking right tho these are differentiated by the title King Kassander and the obverse of Hercules/King Alexander The Great portrait. The coin you have is one of the rarer ones firstly because primarily the units had the horse walking and that the horse was facing right while yours has the horse prancing to the left.From a quick look at wildwinds I could find only a few coins similar to your coin those having either an N (Pishpash's reference) or a P in the exergue. The coin you have is a lifetime issue and was not struck later under Philip III, Alexander IV, Antipater or Kassander.

On the mint it is referenced as uncertain mint in Macedonia however Pella the Capital appears to be the more likely as Amphipolis didn't produce a lot at this time. An outside possibility is Aegae the old Capital prior to 399bc however authors are reluctant to attribute coins to this city for an unknown reason.

Overall it is a nice, rare coin look after this beauty.

Here is a stupid but genuine question: how much would a variation like this be worth? I don't know too much about grading but this coin appears to be "worn." Thanks for the information. I'm glad my hunch is actually correct this time.

The coin is not actually badly "worn".
But it is corroded quite a bit ! Wear is generally unavoidable for most small bronzes as they were made for everyday use. Corrosion on the other hand is always a negative. An evenly worn coin can still retain a certain amount of 'eye appeal' and has the mystique of having been handled by literally thousands of people thousands of years ago ! If you take probabilities into account some of the handlers may well be your own ancestors. After all if you go back far enough we are all related to each other !
Corrosion relates to the conditions which the coin was buried for all the intervening years. Some pieces while almost uncirculated can be corroded into unidentifiable disks. This coin while still identifiable is quite corroded and would probably end up in a dealers 'junk box'. Whether the price is $10 or 2 for $5 depends very much on the dealer.
Photographing ancients is never an easy task either. But using a darker background ( esp with bronze ) will help when using a simple camera. Your camera is adjusting itself by the brightness it sees coming from the countertop. Try using dark cloth ..... Even a pair of blue jeans or a black T shirt will give you better results.

Not a stupid question at all accipeter personally I can't comment on value (haven't spent enough time to comment definitively) tho the corrosion does severely impact on the value (quite a lot of the bronzes suffer from corrosion unfortunately across all the ancients.) To find a good bronze coin of a particular type can take a while of scouring any number of auction houses and will generally go for a sizeable amount.