Hi again,

I checked my drawers, I remembered having a few (like very few) spare ones. However, they turned out all to be very small (8-12mm), probably for bands for ladies models.

I am sorry I cannot help you with this one.

But I am sure you will be able to one online.

An original Zodiac buckle from the period will be 16mm usually, occassionally 14mm.  For the most part Swiss companies did not start with the 18mm - 22mm buckle sizes until later.

Plated would suffice to match the Olympos model, but if a gold is the only option I might be willing to purchase due to the sentimental value of the watch.

I have seen a couple of 16mm ones on ebay that I suspect are reproductions, a road I will go down if I have to.
This option would work as I could fit an 18mm tapered to 16mm band/strap I guess.

Gold or plated?

I have found plenty of other sizes for sale, but I am hunting for an 18mm gold zodiac buckle (pin buckle type), it is the final piece in restoring a lovely vintage Olympos.

That is a late 1950's model, a great find! None of the bands are original. That would sell for quite a bit, perhaps $1,000, once servced. Please read this before winding it again though.

https://www.vintagezodiacs.com/watchrepair.php

so I was taking a walk and I noticed this box of watches and other old items on top of the trash on the curb. This watch was in there. Also these watch bands were in there, but I'm not sure if any of them go with this watch.what is this watch model and what is the value?it says 'Zodiac Seawolf 10 ATM water tested especially' on the back. by the way, there was also a bunch of vinyl records, an old alarm clock and a few other random things which I grabbed. Pretty good curb score
Btw it still seems to work and the second hand moves when I wind it.

Unserviced? You could be lucky that it only needs cleaning and fresh oil. Or...

Seems like a fair, if not a good, price. Just realize you will have to get it serviced before wearing it.

https://www.vintagezodiacs.com/watchrepair.php

Hi all, my friend inherited this Sea Wolf decades ago and offered to sell it to me for $1,100...I've looked at it in person and it is pristine (the expansion bracelet looks/works like new) and the date stamp inside the clasp is 7/67.  What do you think; does it look original/untouched to you and is it worth $1,100?  Thanks!