Thai coins

Help help I am new to collecting coins keeping only to Thai coins. I have 3 coins 10 baht y#334 20baht y#335 and 50baht y#336. All the same apart from the size and value.
On the listings on Numista  one is described as a Golden Jubilee  while another is described as the Agricola Award. What is more confusing is on the head side it is stamped world food summit 1966. On the other side it is stamped Golden Jubilee of His Majesty's Reign and stamped in Thai ๒๕๓๘  2538 (1995) but the jubilee was 2539 (1996) I would be grateful for any help from you experts out there.
Thank you
 Pilford

Hi Pilford,

It commemorates the 50th Anniversary of the Accession of Rama IX, but not necessarily 50 years later. The coins commemorate both the Summit and the Golden Jubilee. I'll check out these respective changes and make the modifications for you.

Цитата: SmartOneKg[...]
 I'll check out these respective changes and make the modifications for you.

CHECK WITH THE THAILAND REFEREE BEFORE YOU MAKE ANY CHANGE!

Thank you for your help with  previous coins.
I now have another problem, I thought I had a full set of Thai 1996 Golden Jubilee coins wit the below insignia  But today I have seen a 150B a 300B and a 600B all in silver and I cannot find them in any catalogue do you think they are genuine?
Thank you again,
Pilford 9
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I would be surprised if they were not genuine, could you upload some images?

These images are alI have off the internet




Thank you Pilford

From SCWC (38th Edition 2010).pdf

I have no doubt your jubilee coins are real.

Thank you very much,
Pilford.

Y336 is change. https://en.numista.com/catalogue/pieces13794.html

gef