Yup harrison, I would concur on an older G-6/AS or G-14/AS. Erla certainly built the former, but the latter is quite rare. I checked in my referenced pics and found only three documented by ascertained W.Nr.'s:
http://www.flickr.com/photos/2809206...57625539886908
Bf 109 G-14/AS W.Nr. 460 337 "Weisse 4", Uffz. Friedrich Zenk, 13./JG 4, Finsterwalde, 1 November 1944. Mombeek 2001, p. 38.
http://www.flickr.com/photos/2809206...57625539886908
Bf 109 G-14/AS W.Nr. 464 642 "Weisse 10", unit and location unknown, France (?), Summer 1945. Source: Collection Kees Mol.
http://www.flickr.com/photos/2809206...57625539886908
Bf 109 G-14/AS W.Nr. 465 381, unit and location unknown, Germany, April 1945. Source: 4th infantry Div, 8th Inf. Regiment via Facebook.com
Cheers
Marc