I have an 1880cc NGC ms63 with a obv strike through error....

A while ago i was lucky enough to pick up an 1880cc GSA morgan dollar...it was still in its original packaging ie the gsa slab and after i purchased it i had it graded......i actually thought it would be a ms60 due to the big bag mark on the obverse...little did i know(i should have looked at it more carefully) it was actually a strike through error!!! in an original GSA slab! Labelled as such by NGC i have since sought out any further examples...i have found none! there was only one other GSA error i seen and it was an 1882cc with a dd obverse....so down to the question...does NGC have population reports for error coins? is it common to get an error in a GSA slab or an error on an 1880cc at all? the reason im asking is im actually thinking of thinning out my GSA collection quite considerably and only keeping one of each year...this would mean selling this error coin and i wanted to get some background info if i could ie population before i part with it...because i may not part with it if its fairly rare ...anyway if anyone has any ideas i would love to hear them. I love my GSA's but have collected basically all there is to collect with them ie all the VAMS including the 85 and all the 78's so the challenge has sort of gone from the collecting so im thinking of going into the unknown and collecting obsolete banknotes! yes i know a bit different to morgans but i received a few from David Bowers the other day and have been fascinated with them ever since, ive almost finished his great book on obsolete money and recommend anyone even if they havnt got an interest to buy his book..what a great read! anyway enough of that , enjoy your weekend as im still getting over my recent grades i got from NGC...coin depression...

gsacc@live.com

cheers

S&D