Thanks, Chris ! I read on the forum that someone stated that they had a Viscount seat on their Mk1. The photo of the underside showed a model 2325. I found one, though it has springs underneath. The seat looks accurate, otherwise. Assuming this is incorrect, I may look to convert it to a rail style for accuracy, if that’s possible. In the meantime, I’ll continue the search for another seat. Unable to find accurate MK1 fenders, so I’ve purchased a later style with hopes they’ll fit. Amazing bike! Just replaced a front inner tube - so easy ! Love this bike ! Excellent!