Gold Roman Coin - what is it worth?

[Glass]

This coin and a couple of others in gold and silver are coming up for auction soon. 2 are roman coins, the others are modern coins from the last century.

What do you think the Roman ones could be worth? Starting with this one:

http://www.donellyauctions.com.au/files/donelly/uploads/imagecache/large_image/files/P1480645.JPG
This image is likely to disappear sometime after the auction is done.

Auction notes:
Roman Gold Soldus Coin 4.49grams (AD 565 - 578) Justin - 11 EF Rare. C/V750

Another one:
http://www.donellyauctions.com.au/files/donelly/uploads/imagecache/large_image/files/P1480646.JPG
Roman Gold Soldus Coin 4.41grams (AD 582 - 602) Maurice Tiberius EF Scarce. C/V750

[madfranks]

I own a couple Roman gold coins from around that Era. Back when gold was around $1400, I paid $450 for mine.

[ximmy]

They are a little bigger than 1/10 AGE's so around 150-175 gold value. Plus the historical and rarity. They will never go down in value.

They look priced 3x value at 600.00 ish.
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Remember some modern coins are 4x value from new, (not that they retain their value)

example:

The polish 7 oz silver globe, silver value @ 30.00 oz = 210.00 They are selling new for $900.00

For what it's worth....