Hitch Coupler size for '67 Silver Streak Sabre 20

[uknunn]

I'm off 150 miles tomorrow to (hopefully) pull back my new old 1967 Silver Streak Sabre 20. When I did the deal I noticed the hitch was limp and so I have a couple of Coupler Kits from Vintage Trailers and hopefully one will work. One is 2" and the other is 2 5/16" (one or the other will work)
I just noticed that there isn't a lot of difference between them and it may be hard to tell which one is needed. Which do you experienced vintage trailer pullers think would be right for my hitch? I appreciate any advice!

[TG Twinkie]

If the size is not stamped on the coupler, then try the 2 5/16 first. Make sure you lock the coupler onto the ball. If it fits; that's the one.
You won't be able to get the larger ball into a smaller coupler. But the opposite is possible.

[uknunn]

So no size stamper on the 46 year old Silver Streak coupler. Looked like the coupler is actually complete and working well and so didn't need fixing after all. The question was, is it a 2" or 2 5/16" coupler.

I WD40-ed it and it's opening and locking fine. I have a 2" ball on my truck and so I lowered her onto it and seemed to fit fine....I locked the coupler and then wound the leg down to lift the back of the truck bed up. It lifted the bed of my truck up nicely. Then, I lifted the leg and decided to take her for a tow around the RV yard. She towed nicely and even reversed good.

Safe to say that a 2 5/16" coupler wouldn't do this and that for sure my hitch is a 2" hitch? I may just buy a 2 5/16 ball to confirm that it's to big for the hitch.

I need to be sure as I have 150 miles to tow her home!!

[SSSabre]

Congratulations on your new-to-you Sabre! Ours is a 1970 model 20. There is very little difference between the models from 1966 thru 1970. All were delivered from the factory with a 2" coupler.