Frame and Motor numbers

[Mully]

Frame # JP20554912
Engine # 2-5200387

Going through the explanation on serials numbers, am I safe to assume:
Frame = 1972 - May - 54912  (what is the JP designation?)
Engine 1972 175CC  

Just another penton that I am looking at.

Thanks in advance.

mully

[tofriedel]

Mully,

For what it is worth, I have 2 - 1972 JP's and there is no JP stamped on the frame.  Both of my bikes start with 7 208***** & 7 209*****.  To the best of my knowledge all of the 72 JP's frame number started with the number 7, then the year and month.

Tony

[Mully]

This bike I am looking at is on Ebay.  I asked the seller for the motor and frame numbers and what I posted here is what he sent me.  I will ask him again if there is really a JP in the number and let you know.

Thanks,

mully

[Mully]

By the way here is the link.

http://cgi.ebay.com/ebaymotors/Other-Makes-Jackpiner-Penton-Jackpiner-175-Vintage-Motorcycle-1972-Enduro_W0QQcmdZViewItemQQcategoryZ6719QQihZ020QQitemZ300293763850QQrdZ1QQsspagenameZWDVW