Which RPM is this? Plus first dip attempt.

I was searching through my grandmothers change while I was over at her lakeside house in Wisconsin. I found many nice errors and coins I will post soon on here seperately. I found lots of foreigns and wheats. Thhis wheat is a 1950-D that has been obviously lacquered likely in he 50s or 60s. I wanted to get rid of that so i bought some acetone. I did two dips, the first was reverse up, pulled it out, rinsed, and repeated with obverse up. It revealed cleaning hairlines and some toning but Im fine with that. I decided why not check for RPMs so I did. And sure enough it did. Ive narrowed it down to three possibilities, CONECA RPM-005, CONECA RPM-006, or a new RPM. I looked and it doesnt really match 5 or 6 but it might be a different die state so I thought Id check here. What do you guys think it is?
Before:


After:


RPM:

 

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http://varietyvista.com/02a LC RPMs Vol 1/1950DRPM005.htm

 

Don't dip copper for a first dip! In fact, don't dip copper at all. Eventually, after talking with some experienced people that clean coins...you MAY be ready to give it a try.

Never mind, your title was misleading. Folks usually don't refer to an acetone soak as a "dip."

PS I'm thinking RPM#5

 

Looks to me to be RPM-5 w/o die crack between 9 and 5

 

Sorry, I usually dont dip coins and probably wont. I didnt realize a soak was different, my bad.

 

Is that it? Did you see 006 too?

 

Thanks guys. You guys are right. It is 005. And, I am pretty sure it is Stage A. It looks like the later the die stage is, the more emphasised the RPM is. Is this true? Because if so then this is definitely a Stage A, which there are no pictures for.

 

Also, anyone know what the actual value of this is? The CONECA and CopperCoins price guide contrast each other.