My statement is still correct:
"The photos you have attached are for a gold capped model with gold on the underside of the lugs, exactly like every 5506 made."
I didn't say you had posted a 5506, I said you had posted another gold capped model with gold on the underside of the lugs.
The one you posted, the 6694 is not gold plated. It is gold capped and, like the 5506, appears to have gold on the underside of the lugs.
Look at the underside of more 5506 and 6694 models and you will see the relatively thick gold cap very clearly, like this one:
https://www.ebay.com/itm/275941109655