Unusual Vintage Station Track

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Every once in a while I am surprised at seeing something I haven't seen before. Here is a Vintage Tomy/Plarail Station Platform Accessory that has a couple very short Double Track pieces that enable the Station Platform to sit in the middle of the track. I don't think I have even seen these separately in a bulk listing although they might be easily overlooked. Buy the looks of the starting price it may be very rare. Anyone else seen or heard of these before? https://www.jauce.com/auction/s715280591