Vintage MG/Sun Stainless Steel Omega Buckles, 1x16mm, 1x18mm

I'm cleaning out old junk piles and realized I have had these two buckles for quite awhile, gathering dust. I hope someone else can make use of them.

Two MG stainless steel buckles. Both to my knowledge genuine, though please, please let me know if there's some clue and I'm mistaken.

One is 16mm and features the actual MG imprint. You can see the measurements below: the outside of the buckle measures 18.49 and the inside measures 16.33mm.

One is 18mm and features the sun imprint. Again, the measurements are posted: outside of the buckle measures 20.19, and the inside, at the bottom, measures 17.33mm, though I believe it's slightly bent, and could easily be pulled .7mm out to accommodate an 18mm strap.

I'm asking $150 for the 16mm buckle, $200 for the 18mm buckle, though I'd note this is not even close to my area of expertise, and if those prices are woefully incorrect one direction or the other, I'm happy to be corrected. I'm in Indiana/USA and happy to work out shipping and payment method with the buyer. I've got a few reviews here, and sell frequently on ebay (wlcutter2), and am on Instagram as wescutter.

Thanks so, so much to everyone here for what remains, imo, the best forum on watches that's existed.