Seamaster Deville 108324 1971

1971 GF Seamaster Deville with unusual case marked KM6326 and 108324 inside caseback, cal 563. I bought it from a friend who was only owner since 1971, rarely worn and looks it. Large case with coin bezel reminiscent of C case but more round in shape. Looks all original and in excellent condition, I have not seen others discussed but found some photos online and 1 on ebay.
I plan to keep it (NOT A SALES PREP!!) but wonder if others have seen this reference, and what you think about its value in this condition.

The model number is KM6326, the other number is a case serial number and is irrelevant when searching for information.

These American market watches are an acquired taste which keeps values pretty low as does the gold filled case.

https://www.google.com/search?sxsrf=ALiCzsZTo3CdRk_e2VsapNJ2ZW2lQVxVlg:1665603652989&source=univ&tbm=isch&q=omega+KM6326&fir=TSIB36ZhpMxPUM%2ChqP0GqTX-_IsnM%2C_%3BBPUxtY7XQWX78M%2CmEhXWDiIx6sxMM%2C_%3B4FwtN7Hhp2Pa6M%2CLwLsJeiPVeB_SM%2C_%3BDUkBgVDPAq9fqM%2CmEhXWDiIx6sxMM%2C_%3Bh5u2OFvSFMR_tM%2C6VZ7zsQbqN__XM%2C_%3BaDv3la_d2NXppM%2CYyUiemhhBmAuXM%2C_%3Ba8Mx0I-Z2OAMaM%2CYyUiemhhBmAuXM%2C_%3Bzm1hAWTs7G0m7M%2ChqP0GqTX-_IsnM%2C_%3BmeYBQVah0FgfXM%2CmEhXWDiIx6sxMM%2C_%3BwUHbejqoxLvlKM%2C55Kzo_RENmGXFM%2C_&usg=AI4_-kSrXTnxvcMs0kBJC8rJfWUDMFfQrA&sa=X&ved=2ahUKEwjvpsqQudv6AhXtMEQIHe99DBMQjJkEegQIExAC&biw=1828&bih=1365&dpr=0.9