Post
by jetstuff » Mon Aug 21, 2023 11:03 am
I found this....doesnt help much though!
Gilera 150 engine/frame numbers
Here are the prefixes, i.e. the homologation codes of the Gilera 150 models and the construction periods. The serial number of an engine or frame was formed by an asterisk. followed by the prefix, the progressive number of the copy and another asterisk.
18, Sport 3-speed model, from February 1952 to September 1952;
19, 3-speed Turismo model, from September 1952 to March 1954;
181, Sport 4-speed model, from January 1953 to April 1954;
182, Sport 4-speed model (second version), from March 1954 to December 1954;
186, Sport 4-speed model (third version), from January 1955 to February 1957;
188, Super Sport model, from May 1957 to July 1959:
191, model Turismo (second version), from March 1954 to December 1955;
194, Gran Turismo model, from May 1955 to May 1956:
195, model Gran Turismo (second version),from November 1955 to May 1957;
196, Gran Turismo model (third version), from July 1957 to February 1958;
197, Sport (fourth version), from March 1957 to February 1959.
NB-The 4 versions of the Sport have only slight technical and aesthetic differences between them.
ATTENTION!
The official denomination 150 Rossa Super (acronym 192) for this model produced from May 1957 to July 1959 should not be misleading. In fact, it is a 175 which, compared to the 150, changes bore and stroke (60x61 mm) plus various engine details.