Here's Admiral's windscreen damage clause, which I think would lead to a replacement of a Morgan windscreen by a Morgan dealer (fingers crossed):
"If we need to replace any glass, we may use glass which is not provided by the vehicle’s manufacturer but is of a similar standard and quality. If there is no glass available and it cannot be reasonably sourced, we will pay the cost shown in the manufacturer’s latest price guide, together with reasonable fitting costs"
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