Hello,
I have some doubt about the schematic of this amplifier, I attach the file.

My purpose is not to physically build this amp (since I have the original at home). I'm studying about amp modeling, so I want to simulate it.
First of all I need to copy the amp schematic on spice, in order to make a comparison between the model and the real amp.

So, these are my questions:

1)
First of all, I want to ask about power supply circuit that generate DC voltage for the tube.
It is placed in file b in the bottom right.
Blue-1 and Blue-2 represent the power socket right?
I have a doubt about the inscription "AC IN 270", what is 270? It's the effective value or the peak value?

However, I implemented this circuit in spice using 50Hz 270V sine input, in other to find CT, G2, HT1, HT2 and HT3. The problem is that I get the same DC output voltage for each of them, I don't think that this is the correct result, what do you think about that?

2)
The second question is about the Belton Reverb always located in the file b. I think it is a spring reverb, but how can I model it on spice? in other searching on google that brand/model did not find any results.

3)
The last question is about ouput transformer, it can be found in file a. I don't fully understand the meaning of the "ring symbol" for which a color is indicated (ex. BLUE YELL WHITE BLACK ecc), what do they represent?.
In addition to model accurately the transformer I should know the brand/model in other to know the material and the non-linear relationships.
From this schematic how can I know what type of transformer is that? how can I get its model?
Since that I have the physical amplifier at home maybe I can see the model dismounting it?

Thanks in advance for any replies.