ASA 2" Reducer Corrector 0.73x : Serial number graved ?

[MartinN]

Hello Friends,

 

since a few weeks, I own an ASA astrograph, with a 3" Wynne corrector. This 3" Wynne corrector has a serial number graved on the body.

 

Until then, I used a 200m 1:4 Newton, which is equipped with a 2" Reducer-Corrector, having the very same dimensions as the "ASA 2" Reducer Corrector 0.73x". I am not sure, if this corrector was made by ASA, because there is no serial number engraved on the body of this 2" corrector.

 

Can those of you, using an ASA delivered "2" Reducer Corrector 0.73x", confirm if there an engraved serial number on the body of the 2" Reducer Corrector ?

 

At least, this would give a hint of the origin of my 2" Reducer Corrector...

 

Thank you very much !

 

Kind regards

Martin