Dating GNC Badges

[myk1066]

Hello all.
Can anyone help me date the finding GNC badges:

RNMS   15361
 ?          485286
SRN   571628
SRN   582106
SRN   585695
SRN   589155
SRN   594428
RMN   59593
SRN        9222226
SRN        9584318
Also to complete my collection I need the finding GNC registered nurse badges for the finding years:
71, 74, 75, 77, 79, 81, 82
Some of those I require may be in the above numbers that are undated.  Does anyone have any I require that I can buy or swap?  All help appreciated.
Mike

[popeye1948]

Hi myk 1066, my RMN badge dates from Feb 1973 and is numbered 51350, hope this gives you an angle on the other dates,

good luck

Jack

[myk1066]

Many thanks Jack, your help is appreciated.
Mike

[nursesue]

hi I have recently obtained a GNC certificate for reg number 55144 and this is dated 28/3/30
sue x