BakerJ, the cat value would be about $690 based on $15 per stamp X 46 stamps, but catalog values assume the stamps are well centered, with good margins, and fault free.
19th Century US stamps in excellent condition commonly sell for around 10 percent of catalog value on
ebay, partly because catalog values don't reflect true market activity very well. But stamps of this type have a large following, and lower-grade stamps in groups sell pretty well.
I've sold many groups of #11s about the size of your group on
ebay. If you were to post that image on
ebay, you wouldn't need to set a minimum bid for them. This lot would draw some lively bidding (closer to closing time) if you included the PAID 3 cancel and the imprint position (a slightly larger image might help). Leaving them in the lot would indicate to bidders that the group hasn't been picked through. 3cent collectors are always looking for fresh material to come on the market.
I would guess the group, as is, would sell in the $100 to $180 range.