G.Sch. & M.Sch. (Josef Reinemann / Reinemann & Lichtinger)
Knöbelstraße 14, Munich. Bavaria.
Known dates: From circa 1905.
These ranges of steins which are marked G.Sch & M.Sch, used Merkelbach & Wick blanks in 0.5 and 1.0 litre capacities, but decorated by Josef Reinemann and
Reinemann & Lichtinger, using designs purchased from the designer/s then currently in vogue. Examples by Franz Ringer Ludwig Holwein. Carl Moos have been seen so far. G.Sch (Geschützt) marks are usually under the handle, whilst M.Sch (Musterschutz) marks are usually on the base, but have also been seen under the handle.
Examples in glass from Theresienthal Glasfabrik, using a similar format were also sold.
Reference:
Merkelbach & Wick stein and pewter lid designed by Ludwig Holwein and showing his unique mark, plus decoration no. #62 (Boar) This is just one of a range of twelve designs from 1905 by Holwein. All of these steins had the ubiquitous JR/M (for Josef Reinemann) touchmark on the hinge pin. 
Basemark on featured stein above, showing impressed Merkelbach & Wick mark, M.Sch mark and penned decoration number #62 (Boar). 
Front view incised decoration of a 0.5 litre Spatenbräu brewery stein. 
Cast marks on the underside of the pewter lid of the Spatenbräu brewery stein 
Mensch sei Vergnügt! or Man be Joyful! on the porcelain Insert on the lid of the Spatenbräu brewery stein. 
Carl Moos #81 with M.Sch mark, probably from 1908. 
M. Sch mark under the handle, on featured Carl Moos #81 above. 
Impressed Merkelbach & Wick mark, on featured Carl Moos #81 above. 
Theresienthal glass stein depicting St Paulus (Paul the apostle) "Paulus schrieb an die Corinthen sauft als wie die Bürstenbinder". A turn of the 20th century idiom, translates thus: Paul wrote about the Corinthians that they drank like fishes. 
M Sch for Musterschutz, on the St Paulus stein above.
Basemarks showing impressed Merkelbach & Wick, Holwein designed, M.Sch mark and penned decoration number #69 (Tulip design). 
Stein by Merkelbach & Wick, complete with a design and signature of Franz Ringer.
Enlargement of Franz Ringer's signature on featured stein above. 
"M.Sch" mark on the base of above featured Franz Ringer stein. 
"G.Sch" at base of handle, on Merkelbach & Wick Stein 
"G.Sch" at base of handle. 
"G.Sch" at base of handle, on probable Carl Moos stein. 
Basemarks showing impressed Merkelbach & Wick, Holwein designed, M.Sch mark and penned decoration number #64 (Stag). 