I think I saw one at one of my local antique stores. I will try to get by there this week and see if they still have it. Prolly will since they had it priced at $300 and it was only about grade 4 of 10.
Here is a pic of the one on my Longboy, I never noticed it said Playbike on it. Its exactly like the ones on both of my Playbikes.
On a side note... I have they exact same bike as that Cold one in the ebay link and if they get $300 for it mines going up for sale fast!