Hi there guitar experts...i'm just moving from acoustic to electric so I thought i'd splash out on a nice Epiphone semi-acoustic.

I'm bidding on one on ebay at the moment, and I just wanted to make sure that I'm not getting ripped off. I believe that a 70s Japan made EPIPHONE EA-250 is more valuable and better quality than the Koren models made later, but I wanted to now how I can tell.

I've asked the seller and he says I'm right to ask, that his is definitely a Japanese model, but that somebody's ripped off the label where is say JAPAN. This made me a little dubious so I wondered if there are any other tell-tale signs...

For example, serial number?

Here's the link if you want to have a look.