Some incorrect information with that ad. RA I and RA II used the same option code 347. The change from RA I to RA II was treated as a running change and used the same option code 347. It appears the hand written note on the billing card was to add an additional $101.65 to invoice cost due to the RA II 347 option. The date probably indicates when the change was made. The fact this billing card was very early in production there could have been updates to the cost for the RA II engine option.
Last edited by Mcronk; 05-17-2021 at 10:35 PM.
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