You will be looking for a standard ammo can in the beautiful Wissahickon Valley Park, adjacent to the Andorra Meadow. Unlike my other gadget caches you won't need a battery to unlock and claim this cache, but you will need a flashlight, or better yet a UV light. Upon opening the lid of this cache you'll be confronted by a twist combination lock and conveniently the numbers for the combination are written right next to it.
That's way too easy.
So in addition to the three numbers you'll need I've added six more. Your job is to find out what three numbers you need to open the cache. Since entering over a hundred different combinations to brute force this lock seems like a jerk move I've added an easy way to narrow the combination down to the three numbers you'll need.
All of the numbers are painted in glow in the dark paint. One shade of paint stands out way more than the others, the numbers painted in this color are the ones you want. To make it more obvious, I've also painted the edges of the cache container and the lock cover with this same color paint. Just in case it were to fade.
Since the glow in the dark paint is best viewed in lower light conditions I'd advise to get this cache early in the morning or in the early evening to make it stand out. Better yet, if you have a UV light in the kit it makes the paint absolutely scream even in full sunlight with almost no need to "charge up" the paint
Once you've entered the combination give the lock a twist (it should spin about 45 degrees) and pull the inner lid up and out to claim your prize. Be sure to relock the cache when you're done (and scramble that combo) for the next person to find!