i just found the serial number after talking to tech at michell engineering . its engraved in the chassis underneath by the tone arm .
And the number is only the three digits 913 so i guess its early indeed
Thank you very much for that info! I had no idea of the engraved serial # and its location until reading this thread.
I have Gyrodec that I purchased at a police auction (mainly stolen bicycles) in the mid 80's for $200 Cnd. with an MMT arm and a Koetsu Black on it (both of those long since gone). No power cord/supply with it which I did have to purchase and it had the soft feet as well which I also replaced immediately but I still felt I did rather well
The soft feet I found out later were indicative of a pretty early model. As it turns out mine is serial #543.
I used my table pretty much as is until about 5-6 years ago when I returned to analog with a stronger committment.
As you are in Europe, a very reasonably priced upgrade path is available to you (with dealer/distributor markups here in North America, it is much more expensive).
I have not touched my motor and won't until it dies as that is a pretty expensive upgrade. I also have decent power conditioning which the table is plugged into. What I did do (apart from the feet in the early 80's and I would advise you to change them) recently is this:
1) buy new springs as well as the upgraded suspension posts
2) replace the main bearing with the new bearing
3) replace the aluminum platter with the composite platter.
4) buy the newer composite clamp (you might want to do this last or you could possibly live without this one-I really like the look of the newer all black clamp and with the felt washer it does work considerably better than the older clamp)
FYI, the main bearing and platter must be replaced at the same time. You cannot do one without the other.
I would say that doing the feet and those 4 upgrades (based on my experience) will give you an excellent performance boost without breaking the bank and the newer suspension posts also allow for much easier and faster setup of the table.
To save money you might want to advertise on a couple of the audio sites there seeking a used platter from someone who has upgraded their composite Gyro platter to the Orbe platter. That's what I did and and the cost was about 50% vs. buying new here.
On your side of the pond, Michell's price for the new main bearing is very fair as far as I'm concerned, as are the new suspension posts.
A new belt is a given of course, but one will be sufficient, and a few drops of oil for the motor of course.
Frankly, I see no collectible value to keeping the table as is but, if there is, you will be able to retain all the original parts (nobody will buy them anyway
) to return it to its former glory if required.