I'm not as well informed in this as i would like, but, it just so happens, here is one i made earlier
I have just finished stripping my blue & white Perthus Pro back to the bare metal in preparation for a respray in graphite grey would you believe
As far as i was aware the later '88 '89 models were called Perthus Pro
with the earlier models just badged as Perthus
? The earlier models also had the chequered design Peugeot lettering on the down tube and the coloured stripes were in a slightly different position on the top & seat tubes? As for the numbering, i'm slightly at a loss, but below are the numbers of my bike both the bottom bracket shell and the original sticker that was on the lower rear stay. All i'm sure of is that the 52 in the code is the frame size.
Hopefully someone in the know can shed more light on this.
Would be great to see some photos of your Perthus as i can't decide on what shade of grey to go for