1935 Oldsmobile grills are now very rare and hard to repair.
If you can find an original unbroken example expect to pay between $1,200 to 1,500 that will need new chrome.
If you have a broken one all the pieces are available I've heard that Muggy Weld rod may solder the pieces but I personally have no tried it.. I 've got 3 or 4 broken ones that I will attempt a repair upon someday.
There are a couple of things to note with respect to 1935 Olds 6 and 8 grills:
1) They are a different design
2) GM only sold 8 cylinder grills as replacements for both the 6 and 8 powered cars therefore an original 6 cylinder grill would have come from a donor car.
There are/were shoddy non GM aftermarket reproduction 6 cylinder grills that were manufactured years ago. They are cheap cast aluminum, fit poorly and have poor indent definition in the bars.
Cheers, Bill