| Thanks for the brochure Ron, you are right, to me they are not the prettiest model.
I'm fairly certain mine is not a Sebring. Except for the tank, seat, and taillight I have all the same parts as your 175 as far as I can tell from your photos. My handlebars, headlight etc are all the same and the frame is identical to yours. The 250 motor is stamped on the crankcase as a 250 so it hasn't just had the cylinder changed.
A local dealer has a 1967 250 they are trying to sell. It's quite rough but very genuine and has all the same parts as my bike so I don't think the spare parts in Holland would be right for my bike. | 
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