I don't understand why you would replace the handlebars. Whie those may not be the original they certainly look OK and offer a very upright riding position which IMHO is great for a city bike.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk