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Here's a Champion Flyer on my '88 Panasonic PT-3500:
It's still pretty new but already quite comfortable. It took a lot of work to get the adjustment right. I couldn't get it to tilt back far enough until I took a dremel grinder to the slot on the seat post adjuster.
And here's a Team Professional on my '72 Bottecchia Giro d'Italia:
I haven't gotten this one dialed in yet. It needs to tilt back a bit more but the seatpost won't hold the adjustment in that position, at least not as tight as I can get it with my pocket multi-tool.