Looks like the 30.5cm Beta, it has the short recuperator cylinders atop the barrel cradle (both 28cm types had long cylinders; when I say 'short' and 'long' I mean in terms of how far they protruded from the front of the cradle) - see the attached photo of the 30.5cm howitzer.
Is that the only photo of it on ebay?
-- Edited by Roger Todd on Wednesday 19th of October 2011 03:34:54 PM
Thank you very much for that link! There are some great photos there.
Here is an old Landships thread where I posted two photos of the 28cm L12 howitzer and one of the L14 (not very helpful as it's a rear view), plus some other views of the 30.5cm:
Yes, it is a 13cm Kanone. You can identify most German Field Artillery and Foot Artillery with the identification drawings and photos on my Lovett Artillery web site: