Not sure why a spike would be needed if setting a candle into an item that appears to be fairly deep. The year letter is for 1910, but regardless, sponge cups are still made, my Mom always kept a glass one on her office desk, not just for stamps and envelopes, but also for moistening her fingers when sorting papers or counting cash - personally just can't see a use for any post. One of my thoughts as well, but my brief search found none with a similar design or a center post (though some didn't show the interior)... ~Cheryl