1965 Washington Quarter

Paleeasseee...
You have to do something about your avatar.
First time I saw it I thought I was having a stroke.
Now I just get dizzy.

I'm also curious also about what you mean by 5/4
There are some 65 dimes and quarters out there that are
90% silver. As well as some possible 1965/66 90% silver Kenn. half's.
Just look at the edges and see if they look silver and then weigh them.
You may of gotten lucky as they bring a very nice premium. You would need to send it out for a cert./slab anyway though to verify it.
As far as weight the silver dime is 2.5 grams / Clad dime is 2.2/2.3
The silver quarter: 6.3 and the clad: 5.7
The half's are: 12.5 90% and 11.5 on the 40%

I will also get some pics of the quarters with the 5 over the 4...Sorry about the avatar... R you sure youre not just seeing blurry or double? I will change it if its that annoying

Yes, I'm positive. It's only Thursday

On the dime, yes some pics would help. The weight
may or may not help as both clad and silver are very close in weight on the roo's dimes. But if it's an accurate 2.4 to 2.6
that would be in the silver ballpark. Also if you have a pretty good ear for silver, a drop test for the ring tone would work. As far as the 1965/4 I know of no known variety
for that coin.