Since the cache was originally an exchange of earlier & earlier minted coins hence the name, but with modern paperless geocaching techniques and fewer folks reading the descriptions, that idea has fizzled out.
I've changed this to Pin Trading Cache. Cache now has a few coins and five pins to trade.
I'm listing coordinates for trailheads depending upon where you park. Here is a link to a trail map.
If coming from the parking off of Rt 10 by the Wilder Dam go up the gravel road turn left at the Westside trail WHERE THERE IS DETAILED TRAIL MAP sign post, then take a right onto the Eastside trail. Continue on that until you're close to Indian Ridge trail. The cache is a short bushwhack NW of the Eastside trail.
If you park at the DHMC use LaHaye Rd to approach the Trail head parking sign. DO NOT use these trails by the trail head sign. you need to walk west, not south, up the unpaved road toward the water tower trail. Before you'd actually reach the water tower an earlier trailhead Bike sign gets you closest to the eastern side Boston Lot trails. For that start to look for the trail head on the left - coordinates given here on the cache page.