Hi Wash1!
I have an older catalogue from 2002 and it states that there are two varieties, one with Gray-green underprint and one with Rose underprint, series #1440 and on. The gray - green listed as 1.00 in good condition 4.00 in fine condition and 12.00 in UNC. The Rose underprint was 0.50 in good, 2.00 in fine and 6.00 in UNC. The prices may have gone up some, but that should put you into the ballpark.
That said. here's a link to an Ebay listing for 7.99
http://cgi.ebay.com/2-VINTAGE-TAUSEND-KRON...bayphotohostingPersonally, I agree with the previous post and would keep it for sentimental value.