Thank you. There is no J prefix, so I guess 57 to 62. Early gun.
An educated guess - early 1959 shipping.36 no dash flat latch #1359XX
How about 1852xx - Thanks.
May be able to help some other inquiries. I actually got to speak to Roy Jinks yesterday and found out that my Model 36 (no dash) 3" noted above with serial no. 5949XX shipped from the factory in February, 1968. These may help others approximate the manufacture date of their guns.
How about Serial # J792XX No dashes
J792XX looks to be 1981.