Weird engine number?

[TonyB]

Can anyone identify this engine number believed to be a 3C?  Engine R51983,,,,, its from a none matching frame bike or have they quoted it incorrectly?

 

[helicopterjim]

Can you post a photograph? What year 3C?

 

[TonyB]

Its a 1975 had an engine swap the frame number is 3235,  Engine R51983 which doesn't seem right?

 

[Rob]

Incorrectly quoted - no Laverda engine number matches that format.  The first triples - designated 1000 ran from 1001.  3Cs ran from 1230 to 3351* before changing to 3CL designation. 

* give or take a rivet counter or two! 

 

[Grant]

Need a photo.
Only thing I can think of is replacement crankcases were bought. Possible to buy them ex factory without numbers, to be stamped by dealer. And then someone stamped them that way.

 

[mauricejota7604]

If those are the numbers stamped on the cases they are not Laverda numbers.

 

[Laverdalothar]

A Photo would tell if the original number has been grinded away or if this potentially is a replacement case that the replacing dealer has stamped f.e. His names first letter plus month and year (5-1983) of when the replacement was done...

 

[Ghostbuster]

I think I recognise the number sounds like one that's been doing the rounds for a while. If it's red with a 1200 tank and side panels then it's a real bitsa. I last saw it at Stafford and it looked like the number had been ground off and another hand stamped on.