:welcome: Wild Bill,
Yes sir, the U-1A Otter emblem was located on both sides of the engine cowling. Location is actually shown on your message, dated Apr 12 @09:26. See your posted photo of Otter # 81691.
My personal choice of A/C serial # is 81692 which was crew chiefed by my old buddy Ron Gordon. I know Bob likes the Company Commanders A/C serial # 52222 which is sure OK by me. Your choice.
We're just so grateful to you for creating this paint for this low, slow and reliable old war bird. I know I'm speaking for all members of the 18th Avn Co. circa, 1962.
May your brushes always be like new and your colors vibrant.
SBP (spamnacan) :typing: