As well as the 95mm mortar the Imperial Arsenal in Istanbul also recycled 15cm Mörsers as mortars. These were originally short barrelled (L/6.4?)
but seem to have had a barrel extension and a new carriage. The list of guns imported by the ottomans includes 20 15cm L/6.4 Mörsers from Krupp
in 1885 but there's no indication whether the carriages were field or fortress carriages (I'll show both in the next post).
I don't think any of the heavy mortars survived.
Charlie
Images are from the 1892 Krupp Catalogue. Note the massive wooden baseplate in the first image - the Ottoman mortar seems to have used something similar as firing platform.
Yes - 7.5cm and 12cm were in the 1892 catalog along with 8.7cm and 10.7cm Morsers
There were also two types of 21cm and a 24cm Morser as well.
In the 1896 catalog there is only one Morser offered - a 10.5cm.
The Ottomans bought 20x12cm, 20x15cm and 20x21cm around 1885