Keep your eye glued to Reverb or eBay, or both, Gibsondependable routinely parts these guitars out, for better or for worse.
Buy a bridge and use it for parts.
One of the reasons I'm staying away from these guitars is I had one with bridge and screw issues I could not rectify without replacing some parts but there are some hacks.
The issue was that side pressure from bending strings and years of general wear and tear largely wiped the threads from a couple of the soft brass roller saddles. The hack was to slip a piece of paper in the thread to take up the gap, not an idea situation at all. You'll find the threads are wiped precisely where the correct string spacing is.
There are new parts kits from Germany - or were - but shipping any small part from Europe now starts at around $40, so economically, it's not an easy decision, and be aware that there were three saddles sizes, although one is bass so huge.
Buy a bridge, use it for parts. You may have some loose threads on the trebles, but the bass saddles probably not.
In this current auction, he's selling all the bridge pieces at one, who knows how high that will go, but it will still be Guild prices.
As you can see in the pics, this style of bridge hangs on slots, and there is another style - later? - although it's the mounting arrangement that different, the saddles and screws should be the same.
Year: 1979. Well, here is your opportunity do so. Near Mint:Has only one flaw or a couple lite flaws. Fair:Has more than one noticeable flaw that will be noted. All of our Gibson parts are Gibson USA parts only.
www.ebay.com
Ouch, he even pulled the inserts from the body.
My personal feeling about this always run towards some type of punishment that isn't fit to print.