Any info on this?

[EvilKing00]

I recently won this auction

http://www.ebay.com/itm/1930s-German...vip=true&rt=nc

I have missed out about 5-6 times on individual german transfers of ruth (single)

I know (or think I know) its a 1923 Greman transfer. I have seen the ruth sell for WAY higher prices, as I was the under or way underbidder 5-6 times. That's all I know.

I would like to know if anyone here could give more info:

1 - What exactly are they? Stamps?
2 - Why are the letters reversed?
3 - What is the value? (im not selling just would like to have an idea)
4 - Was it only 1923 or was there a range or years they were made?
5 - Are they rare? Like I said I have seen 5-6 in the last year, so that's not to rare.
5 - And the question I have to ask ...cut or not to cut?? (no way im cutting, but would like to see others thoughts)
7 - any thing else would be greatly appreciated as I love to learn about the history of cards and items like this.

thanks in advance